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Add a hook to allow the toedev handling an offloaded connection to

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provide accurate TCP_INFO.

Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D14816
This commit is contained in:
Navdeep Parhar 2018-04-03 01:08:54 +00:00
parent 9f5b999aca
commit a64564109a
5 changed files with 32 additions and 2 deletions
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11
sys/netinet/tcp_offload.c
View File

@ -167,6 +167,17 @@ tcp_offload_ctloutput(struct tcpcb *tp, int sopt_dir, int sopt_name)
tod->tod_ctloutput(tod, tp, sopt_dir, sopt_name);
}
void
tcp_offload_tcp_info(struct tcpcb *tp, struct tcp_info *ti)
{
struct toedev *tod = tp->tod;
KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
INP_WLOCK_ASSERT(tp->t_inpcb);
tod->tod_tcp_info(tod, tp, ti);
}
void
tcp_offload_detach(struct tcpcb *tp)
{

1
sys/netinet/tcp_offload.h
View File

@ -45,6 +45,7 @@ void tcp_offload_input(struct tcpcb *, struct mbuf *);
int tcp_offload_output(struct tcpcb *);
void tcp_offload_rcvd(struct tcpcb *);
void tcp_offload_ctloutput(struct tcpcb *, int, int);
void tcp_offload_tcp_info(struct tcpcb *, struct tcp_info *);
void tcp_offload_detach(struct tcpcb *);
#endif

8
sys/netinet/tcp_usrreq.c
View File

@ -1393,11 +1393,15 @@ tcp_fill_info(struct tcpcb *tp, struct tcp_info *ti)
ti->tcpi_snd_nxt = tp->snd_nxt;
ti->tcpi_snd_mss = tp->t_maxseg;
ti->tcpi_rcv_mss = tp->t_maxseg;
if (tp->t_flags & TF_TOE)
ti->tcpi_options |= TCPI_OPT_TOE;
ti->tcpi_snd_rexmitpack = tp->t_sndrexmitpack;
ti->tcpi_rcv_ooopack = tp->t_rcvoopack;
ti->tcpi_snd_zerowin = tp->t_sndzerowin;
#ifdef TCP_OFFLOAD
if (tp->t_flags & TF_TOE) {
ti->tcpi_options |= TCPI_OPT_TOE;
tcp_offload_tcp_info(tp, ti);
}
#endif
}
/*

9
sys/netinet/toecore.c
View File

@ -182,6 +182,14 @@ toedev_ctloutput(struct toedev *tod __unused, struct tcpcb *tp __unused,
return;
}
static void
toedev_tcp_info(struct toedev *tod __unused, struct tcpcb *tp __unused,
struct tcp_info *ti __unused)
{
return;
}
/*
* Inform one or more TOE devices about a listening socket.
*/
@ -271,6 +279,7 @@ init_toedev(struct toedev *tod)
tod->tod_syncache_respond = toedev_syncache_respond;
tod->tod_offload_socket = toedev_offload_socket;
tod->tod_ctloutput = toedev_ctloutput;
tod->tod_tcp_info = toedev_tcp_info;
}
/*

5
sys/netinet/toecore.h
View File

@ -38,6 +38,7 @@
struct tcpopt;
struct tcphdr;
struct in_conninfo;
struct tcp_info;
struct toedev {
TAILQ_ENTRY(toedev) link; /* glue for toedev_list */
@ -101,6 +102,10 @@ struct toedev {
/* TCP socket option */
void (*tod_ctloutput)(struct toedev *, struct tcpcb *, int, int);
/* Update software state */
void (*tod_tcp_info)(struct toedev *, struct tcpcb *,
struct tcp_info *);
};
#include <sys/eventhandler.h>