~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/linux/tcp.h

Version: ~ [ linux-5.7 ] ~ [ linux-5.6.15 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.43 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.125 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.182 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.225 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.225 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.84 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /* SPDX-License-Identifier: GPL-2.0-or-later */
  2 /*
  3  * INET         An implementation of the TCP/IP protocol suite for the LINUX
  4  *              operating system.  INET is implemented using the  BSD Socket
  5  *              interface as the means of communication with the user level.
  6  *
  7  *              Definitions for the TCP protocol.
  8  *
  9  * Version:     @(#)tcp.h       1.0.2   04/28/93
 10  *
 11  * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 12  */
 13 #ifndef _LINUX_TCP_H
 14 #define _LINUX_TCP_H
 15 
 16 
 17 #include <linux/skbuff.h>
 18 #include <linux/win_minmax.h>
 19 #include <net/sock.h>
 20 #include <net/inet_connection_sock.h>
 21 #include <net/inet_timewait_sock.h>
 22 #include <uapi/linux/tcp.h>
 23 
 24 static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb)
 25 {
 26         return (struct tcphdr *)skb_transport_header(skb);
 27 }
 28 
 29 static inline unsigned int __tcp_hdrlen(const struct tcphdr *th)
 30 {
 31         return th->doff * 4;
 32 }
 33 
 34 static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
 35 {
 36         return __tcp_hdrlen(tcp_hdr(skb));
 37 }
 38 
 39 static inline struct tcphdr *inner_tcp_hdr(const struct sk_buff *skb)
 40 {
 41         return (struct tcphdr *)skb_inner_transport_header(skb);
 42 }
 43 
 44 static inline unsigned int inner_tcp_hdrlen(const struct sk_buff *skb)
 45 {
 46         return inner_tcp_hdr(skb)->doff * 4;
 47 }
 48 
 49 static inline unsigned int tcp_optlen(const struct sk_buff *skb)
 50 {
 51         return (tcp_hdr(skb)->doff - 5) * 4;
 52 }
 53 
 54 /* TCP Fast Open */
 55 #define TCP_FASTOPEN_COOKIE_MIN 4       /* Min Fast Open Cookie size in bytes */
 56 #define TCP_FASTOPEN_COOKIE_MAX 16      /* Max Fast Open Cookie size in bytes */
 57 #define TCP_FASTOPEN_COOKIE_SIZE 8      /* the size employed by this impl. */
 58 
 59 /* TCP Fast Open Cookie as stored in memory */
 60 struct tcp_fastopen_cookie {
 61         __le64  val[DIV_ROUND_UP(TCP_FASTOPEN_COOKIE_MAX, sizeof(u64))];
 62         s8      len;
 63         bool    exp;    /* In RFC6994 experimental option format */
 64 };
 65 
 66 /* This defines a selective acknowledgement block. */
 67 struct tcp_sack_block_wire {
 68         __be32  start_seq;
 69         __be32  end_seq;
 70 };
 71 
 72 struct tcp_sack_block {
 73         u32     start_seq;
 74         u32     end_seq;
 75 };
 76 
 77 /*These are used to set the sack_ok field in struct tcp_options_received */
 78 #define TCP_SACK_SEEN     (1 << 0)   /*1 = peer is SACK capable, */
 79 #define TCP_DSACK_SEEN    (1 << 2)   /*1 = DSACK was received from peer*/
 80 
 81 struct tcp_options_received {
 82 /*      PAWS/RTTM data  */
 83         int     ts_recent_stamp;/* Time we stored ts_recent (for aging) */
 84         u32     ts_recent;      /* Time stamp to echo next              */
 85         u32     rcv_tsval;      /* Time stamp value                     */
 86         u32     rcv_tsecr;      /* Time stamp echo reply                */
 87         u16     saw_tstamp : 1, /* Saw TIMESTAMP on last packet         */
 88                 tstamp_ok : 1,  /* TIMESTAMP seen on SYN packet         */
 89                 dsack : 1,      /* D-SACK is scheduled                  */
 90                 wscale_ok : 1,  /* Wscale seen on SYN packet            */
 91                 sack_ok : 3,    /* SACK seen on SYN packet              */
 92                 smc_ok : 1,     /* SMC seen on SYN packet               */
 93                 snd_wscale : 4, /* Window scaling received from sender  */
 94                 rcv_wscale : 4; /* Window scaling to send to receiver   */
 95         u8      num_sacks;      /* Number of SACK blocks                */
 96         u16     user_mss;       /* mss requested by user in ioctl       */
 97         u16     mss_clamp;      /* Maximal mss, negotiated at connection setup */
 98 };
 99 
100 static inline void tcp_clear_options(struct tcp_options_received *rx_opt)
101 {
102         rx_opt->tstamp_ok = rx_opt->sack_ok = 0;
103         rx_opt->wscale_ok = rx_opt->snd_wscale = 0;
104 #if IS_ENABLED(CONFIG_SMC)
105         rx_opt->smc_ok = 0;
106 #endif
107 }
108 
109 /* This is the max number of SACKS that we'll generate and process. It's safe
110  * to increase this, although since:
111  *   size = TCPOLEN_SACK_BASE_ALIGNED (4) + n * TCPOLEN_SACK_PERBLOCK (8)
112  * only four options will fit in a standard TCP header */
113 #define TCP_NUM_SACKS 4
114 
115 struct tcp_request_sock_ops;
116 
117 struct tcp_request_sock {
118         struct inet_request_sock        req;
119         const struct tcp_request_sock_ops *af_specific;
120         u64                             snt_synack; /* first SYNACK sent time */
121         bool                            tfo_listener;
122         u32                             txhash;
123         u32                             rcv_isn;
124         u32                             snt_isn;
125         u32                             ts_off;
126         u32                             last_oow_ack_time; /* last SYNACK */
127         u32                             rcv_nxt; /* the ack # by SYNACK. For
128                                                   * FastOpen it's the seq#
129                                                   * after data-in-SYN.
130                                                   */
131 };
132 
133 static inline struct tcp_request_sock *tcp_rsk(const struct request_sock *req)
134 {
135         return (struct tcp_request_sock *)req;
136 }
137 
138 struct tcp_sock {
139         /* inet_connection_sock has to be the first member of tcp_sock */
140         struct inet_connection_sock     inet_conn;
141         u16     tcp_header_len; /* Bytes of tcp header to send          */
142         u16     gso_segs;       /* Max number of segs per GSO packet    */
143 
144 /*
145  *      Header prediction flags
146  *      0x5?10 << 16 + snd_wnd in net byte order
147  */
148         __be32  pred_flags;
149 
150 /*
151  *      RFC793 variables by their proper names. This means you can
152  *      read the code and the spec side by side (and laugh ...)
153  *      See RFC793 and RFC1122. The RFC writes these in capitals.
154  */
155         u64     bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived
156                                  * sum(delta(rcv_nxt)), or how many bytes
157                                  * were acked.
158                                  */
159         u32     segs_in;        /* RFC4898 tcpEStatsPerfSegsIn
160                                  * total number of segments in.
161                                  */
162         u32     data_segs_in;   /* RFC4898 tcpEStatsPerfDataSegsIn
163                                  * total number of data segments in.
164                                  */
165         u32     rcv_nxt;        /* What we want to receive next         */
166         u32     copied_seq;     /* Head of yet unread data              */
167         u32     rcv_wup;        /* rcv_nxt on last window update sent   */
168         u32     snd_nxt;        /* Next sequence we send                */
169         u32     segs_out;       /* RFC4898 tcpEStatsPerfSegsOut
170                                  * The total number of segments sent.
171                                  */
172         u32     data_segs_out;  /* RFC4898 tcpEStatsPerfDataSegsOut
173                                  * total number of data segments sent.
174                                  */
175         u64     bytes_sent;     /* RFC4898 tcpEStatsPerfHCDataOctetsOut
176                                  * total number of data bytes sent.
177                                  */
178         u64     bytes_acked;    /* RFC4898 tcpEStatsAppHCThruOctetsAcked
179                                  * sum(delta(snd_una)), or how many bytes
180                                  * were acked.
181                                  */
182         u32     dsack_dups;     /* RFC4898 tcpEStatsStackDSACKDups
183                                  * total number of DSACK blocks received
184                                  */
185         u32     snd_una;        /* First byte we want an ack for        */
186         u32     snd_sml;        /* Last byte of the most recently transmitted small packet */
187         u32     rcv_tstamp;     /* timestamp of last received ACK (for keepalives) */
188         u32     lsndtime;       /* timestamp of last sent data packet (for restart window) */
189         u32     last_oow_ack_time;  /* timestamp of last out-of-window ACK */
190         u32     compressed_ack_rcv_nxt;
191 
192         u32     tsoffset;       /* timestamp offset */
193 
194         struct list_head tsq_node; /* anchor in tsq_tasklet.head list */
195         struct list_head tsorted_sent_queue; /* time-sorted sent but un-SACKed skbs */
196 
197         u32     snd_wl1;        /* Sequence for window update           */
198         u32     snd_wnd;        /* The window we expect to receive      */
199         u32     max_window;     /* Maximal window ever seen from peer   */
200         u32     mss_cache;      /* Cached effective mss, not including SACKS */
201 
202         u32     window_clamp;   /* Maximal window to advertise          */
203         u32     rcv_ssthresh;   /* Current window clamp                 */
204 
205         /* Information of the most recently (s)acked skb */
206         struct tcp_rack {
207                 u64 mstamp; /* (Re)sent time of the skb */
208                 u32 rtt_us;  /* Associated RTT */
209                 u32 end_seq; /* Ending TCP sequence of the skb */
210                 u32 last_delivered; /* tp->delivered at last reo_wnd adj */
211                 u8 reo_wnd_steps;   /* Allowed reordering window */
212 #define TCP_RACK_RECOVERY_THRESH 16
213                 u8 reo_wnd_persist:5, /* No. of recovery since last adj */
214                    dsack_seen:1, /* Whether DSACK seen after last adj */
215                    advanced:1;   /* mstamp advanced since last lost marking */
216         } rack;
217         u16     advmss;         /* Advertised MSS                       */
218         u8      compressed_ack;
219         u32     chrono_start;   /* Start time in jiffies of a TCP chrono */
220         u32     chrono_stat[3]; /* Time in jiffies for chrono_stat stats */
221         u8      chrono_type:2,  /* current chronograph type */
222                 rate_app_limited:1,  /* rate_{delivered,interval_us} limited? */
223                 fastopen_connect:1, /* FASTOPEN_CONNECT sockopt */
224                 fastopen_no_cookie:1, /* Allow send/recv SYN+data without a cookie */
225                 is_sack_reneg:1,    /* in recovery from loss with SACK reneg? */
226                 unused:2;
227         u8      nonagle     : 4,/* Disable Nagle algorithm?             */
228                 thin_lto    : 1,/* Use linear timeouts for thin streams */
229                 recvmsg_inq : 1,/* Indicate # of bytes in queue upon recvmsg */
230                 repair      : 1,
231                 frto        : 1;/* F-RTO (RFC5682) activated in CA_Loss */
232         u8      repair_queue;
233         u8      syn_data:1,     /* SYN includes data */
234                 syn_fastopen:1, /* SYN includes Fast Open option */
235                 syn_fastopen_exp:1,/* SYN includes Fast Open exp. option */
236                 syn_fastopen_ch:1, /* Active TFO re-enabling probe */
237                 syn_data_acked:1,/* data in SYN is acked by SYN-ACK */
238                 save_syn:1,     /* Save headers of SYN packet */
239                 is_cwnd_limited:1,/* forward progress limited by snd_cwnd? */
240                 syn_smc:1;      /* SYN includes SMC */
241         u32     tlp_high_seq;   /* snd_nxt at the time of TLP retransmit. */
242 
243         u32     tcp_tx_delay;   /* delay (in usec) added to TX packets */
244         u64     tcp_wstamp_ns;  /* departure time for next sent data packet */
245         u64     tcp_clock_cache; /* cache last tcp_clock_ns() (see tcp_mstamp_refresh()) */
246 
247 /* RTT measurement */
248         u64     tcp_mstamp;     /* most recent packet received/sent */
249         u32     srtt_us;        /* smoothed round trip time << 3 in usecs */
250         u32     mdev_us;        /* medium deviation                     */
251         u32     mdev_max_us;    /* maximal mdev for the last rtt period */
252         u32     rttvar_us;      /* smoothed mdev_max                    */
253         u32     rtt_seq;        /* sequence number to update rttvar     */
254         struct  minmax rtt_min;
255 
256         u32     packets_out;    /* Packets which are "in flight"        */
257         u32     retrans_out;    /* Retransmitted packets out            */
258         u32     max_packets_out;  /* max packets_out in last window */
259         u32     max_packets_seq;  /* right edge of max_packets_out flight */
260 
261         u16     urg_data;       /* Saved octet of OOB data and control flags */
262         u8      ecn_flags;      /* ECN status bits.                     */
263         u8      keepalive_probes; /* num of allowed keep alive probes   */
264         u32     reordering;     /* Packet reordering metric.            */
265         u32     reord_seen;     /* number of data packet reordering events */
266         u32     snd_up;         /* Urgent pointer               */
267 
268 /*
269  *      Options received (usually on last packet, some only on SYN packets).
270  */
271         struct tcp_options_received rx_opt;
272 
273 /*
274  *      Slow start and congestion control (see also Nagle, and Karn & Partridge)
275  */
276         u32     snd_ssthresh;   /* Slow start size threshold            */
277         u32     snd_cwnd;       /* Sending congestion window            */
278         u32     snd_cwnd_cnt;   /* Linear increase counter              */
279         u32     snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
280         u32     snd_cwnd_used;
281         u32     snd_cwnd_stamp;
282         u32     prior_cwnd;     /* cwnd right before starting loss recovery */
283         u32     prr_delivered;  /* Number of newly delivered packets to
284                                  * receiver in Recovery. */
285         u32     prr_out;        /* Total number of pkts sent during Recovery. */
286         u32     delivered;      /* Total data packets delivered incl. rexmits */
287         u32     delivered_ce;   /* Like the above but only ECE marked packets */
288         u32     lost;           /* Total data packets lost incl. rexmits */
289         u32     app_limited;    /* limited until "delivered" reaches this val */
290         u64     first_tx_mstamp;  /* start of window send phase */
291         u64     delivered_mstamp; /* time we reached "delivered" */
292         u32     rate_delivered;    /* saved rate sample: packets delivered */
293         u32     rate_interval_us;  /* saved rate sample: time elapsed */
294 
295         u32     rcv_wnd;        /* Current receiver window              */
296         u32     write_seq;      /* Tail(+1) of data held in tcp send buffer */
297         u32     notsent_lowat;  /* TCP_NOTSENT_LOWAT */
298         u32     pushed_seq;     /* Last pushed seq, required to talk to windows */
299         u32     lost_out;       /* Lost packets                 */
300         u32     sacked_out;     /* SACK'd packets                       */
301 
302         struct hrtimer  pacing_timer;
303         struct hrtimer  compressed_ack_timer;
304 
305         /* from STCP, retrans queue hinting */
306         struct sk_buff* lost_skb_hint;
307         struct sk_buff *retransmit_skb_hint;
308 
309         /* OOO segments go in this rbtree. Socket lock must be held. */
310         struct rb_root  out_of_order_queue;
311         struct sk_buff  *ooo_last_skb; /* cache rb_last(out_of_order_queue) */
312 
313         /* SACKs data, these 2 need to be together (see tcp_options_write) */
314         struct tcp_sack_block duplicate_sack[1]; /* D-SACK block */
315         struct tcp_sack_block selective_acks[4]; /* The SACKS themselves*/
316 
317         struct tcp_sack_block recv_sack_cache[4];
318 
319         struct sk_buff *highest_sack;   /* skb just after the highest
320                                          * skb with SACKed bit set
321                                          * (validity guaranteed only if
322                                          * sacked_out > 0)
323                                          */
324 
325         int     lost_cnt_hint;
326 
327         u32     prior_ssthresh; /* ssthresh saved at recovery start     */
328         u32     high_seq;       /* snd_nxt at onset of congestion       */
329 
330         u32     retrans_stamp;  /* Timestamp of the last retransmit,
331                                  * also used in SYN-SENT to remember stamp of
332                                  * the first SYN. */
333         u32     undo_marker;    /* snd_una upon a new recovery episode. */
334         int     undo_retrans;   /* number of undoable retransmissions. */
335         u64     bytes_retrans;  /* RFC4898 tcpEStatsPerfOctetsRetrans
336                                  * Total data bytes retransmitted
337                                  */
338         u32     total_retrans;  /* Total retransmits for entire connection */
339 
340         u32     urg_seq;        /* Seq of received urgent pointer */
341         unsigned int            keepalive_time;   /* time before keep alive takes place */
342         unsigned int            keepalive_intvl;  /* time interval between keep alive probes */
343 
344         int                     linger2;
345 
346 
347 /* Sock_ops bpf program related variables */
348 #ifdef CONFIG_BPF
349         u8      bpf_sock_ops_cb_flags;  /* Control calling BPF programs
350                                          * values defined in uapi/linux/tcp.h
351                                          */
352 #define BPF_SOCK_OPS_TEST_FLAG(TP, ARG) (TP->bpf_sock_ops_cb_flags & ARG)
353 #else
354 #define BPF_SOCK_OPS_TEST_FLAG(TP, ARG) 0
355 #endif
356 
357 /* Receiver side RTT estimation */
358         u32 rcv_rtt_last_tsecr;
359         struct {
360                 u32     rtt_us;
361                 u32     seq;
362                 u64     time;
363         } rcv_rtt_est;
364 
365 /* Receiver queue space */
366         struct {
367                 u32     space;
368                 u32     seq;
369                 u64     time;
370         } rcvq_space;
371 
372 /* TCP-specific MTU probe information. */
373         struct {
374                 u32               probe_seq_start;
375                 u32               probe_seq_end;
376         } mtu_probe;
377         u32     mtu_info; /* We received an ICMP_FRAG_NEEDED / ICMPV6_PKT_TOOBIG
378                            * while socket was owned by user.
379                            */
380 
381 #ifdef CONFIG_TCP_MD5SIG
382 /* TCP AF-Specific parts; only used by MD5 Signature support so far */
383         const struct tcp_sock_af_ops    *af_specific;
384 
385 /* TCP MD5 Signature Option information */
386         struct tcp_md5sig_info  __rcu *md5sig_info;
387 #endif
388 
389 /* TCP fastopen related information */
390         struct tcp_fastopen_request *fastopen_req;
391         /* fastopen_rsk points to request_sock that resulted in this big
392          * socket. Used to retransmit SYNACKs etc.
393          */
394         struct request_sock *fastopen_rsk;
395         u32     *saved_syn;
396 };
397 
398 enum tsq_enum {
399         TSQ_THROTTLED,
400         TSQ_QUEUED,
401         TCP_TSQ_DEFERRED,          /* tcp_tasklet_func() found socket was owned */
402         TCP_WRITE_TIMER_DEFERRED,  /* tcp_write_timer() found socket was owned */
403         TCP_DELACK_TIMER_DEFERRED, /* tcp_delack_timer() found socket was owned */
404         TCP_MTU_REDUCED_DEFERRED,  /* tcp_v{4|6}_err() could not call
405                                     * tcp_v{4|6}_mtu_reduced()
406                                     */
407 };
408 
409 enum tsq_flags {
410         TSQF_THROTTLED                  = (1UL << TSQ_THROTTLED),
411         TSQF_QUEUED                     = (1UL << TSQ_QUEUED),
412         TCPF_TSQ_DEFERRED               = (1UL << TCP_TSQ_DEFERRED),
413         TCPF_WRITE_TIMER_DEFERRED       = (1UL << TCP_WRITE_TIMER_DEFERRED),
414         TCPF_DELACK_TIMER_DEFERRED      = (1UL << TCP_DELACK_TIMER_DEFERRED),
415         TCPF_MTU_REDUCED_DEFERRED       = (1UL << TCP_MTU_REDUCED_DEFERRED),
416 };
417 
418 static inline struct tcp_sock *tcp_sk(const struct sock *sk)
419 {
420         return (struct tcp_sock *)sk;
421 }
422 
423 struct tcp_timewait_sock {
424         struct inet_timewait_sock tw_sk;
425 #define tw_rcv_nxt tw_sk.__tw_common.skc_tw_rcv_nxt
426 #define tw_snd_nxt tw_sk.__tw_common.skc_tw_snd_nxt
427         u32                       tw_rcv_wnd;
428         u32                       tw_ts_offset;
429         u32                       tw_ts_recent;
430 
431         /* The time we sent the last out-of-window ACK: */
432         u32                       tw_last_oow_ack_time;
433 
434         int                       tw_ts_recent_stamp;
435         u32                       tw_tx_delay;
436 #ifdef CONFIG_TCP_MD5SIG
437         struct tcp_md5sig_key     *tw_md5_key;
438 #endif
439 };
440 
441 static inline struct tcp_timewait_sock *tcp_twsk(const struct sock *sk)
442 {
443         return (struct tcp_timewait_sock *)sk;
444 }
445 
446 static inline bool tcp_passive_fastopen(const struct sock *sk)
447 {
448         return (sk->sk_state == TCP_SYN_RECV &&
449                 tcp_sk(sk)->fastopen_rsk != NULL);
450 }
451 
452 static inline void fastopen_queue_tune(struct sock *sk, int backlog)
453 {
454         struct request_sock_queue *queue = &inet_csk(sk)->icsk_accept_queue;
455         int somaxconn = READ_ONCE(sock_net(sk)->core.sysctl_somaxconn);
456 
457         queue->fastopenq.max_qlen = min_t(unsigned int, backlog, somaxconn);
458 }
459 
460 static inline void tcp_move_syn(struct tcp_sock *tp,
461                                 struct request_sock *req)
462 {
463         tp->saved_syn = req->saved_syn;
464         req->saved_syn = NULL;
465 }
466 
467 static inline void tcp_saved_syn_free(struct tcp_sock *tp)
468 {
469         kfree(tp->saved_syn);
470         tp->saved_syn = NULL;
471 }
472 
473 struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk);
474 
475 static inline u16 tcp_mss_clamp(const struct tcp_sock *tp, u16 mss)
476 {
477         /* We use READ_ONCE() here because socket might not be locked.
478          * This happens for listeners.
479          */
480         u16 user_mss = READ_ONCE(tp->rx_opt.user_mss);
481 
482         return (user_mss && user_mss < mss) ? user_mss : mss;
483 }
484 
485 int tcp_skb_shift(struct sk_buff *to, struct sk_buff *from, int pcount,
486                   int shiftlen);
487 
488 #endif  /* _LINUX_TCP_H */
489 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp