Date: Mon, 21 Oct 2024 18:39:04 GMT From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: c18966b3dce0 - stable/14 - cxgbe/t4_tom: Detach the toep from the tcpcb when entering TIME_WAIT. Message-ID: <202410211839.49LId4KG035829@gitrepo.freebsd.org>
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The branch stable/14 has been updated by np: URL: https://cgit.FreeBSD.org/src/commit/?id=c18966b3dce0e5110c79b23d290d453c22b49252 commit c18966b3dce0e5110c79b23d290d453c22b49252 Author: Navdeep Parhar <np@FreeBSD.org> AuthorDate: 2024-07-17 05:23:33 +0000 Commit: Navdeep Parhar <np@FreeBSD.org> CommitDate: 2024-10-21 16:46:29 +0000 cxgbe/t4_tom: Detach the toep from the tcpcb when entering TIME_WAIT. The kernel used to call tod_pcb_detach when entering TIME_WAIT but that seems to have changed, likely with the TIME_WAIT overhaul in the kernel some time ago. Catch up by having the driver perform the detach. The hardware does not handle TIME_WAIT so it's important to detach and let the kernel arm the 2MSL timer to deal with it. Reported by: Sony Arpita Das @ Chelsio Reviewed by: jhb Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D45990 (cherry picked from commit bbc326241d91ab2cee2ec2c5c0aa8a906480132f) --- sys/dev/cxgbe/tom/t4_cpl_io.c | 2 ++ sys/dev/cxgbe/tom/t4_tom.c | 2 +- sys/dev/cxgbe/tom/t4_tom.h | 1 + 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/sys/dev/cxgbe/tom/t4_cpl_io.c b/sys/dev/cxgbe/tom/t4_cpl_io.c index 0d42c89dcf93..0a40bbda3f3f 100644 --- a/sys/dev/cxgbe/tom/t4_cpl_io.c +++ b/sys/dev/cxgbe/tom/t4_cpl_io.c @@ -1393,6 +1393,7 @@ do_peer_close(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) case TCPS_FIN_WAIT_2: restore_so_proto(so, inp->inp_vflag & INP_IPV6); + t4_pcb_detach(NULL, tp); tcp_twstart(tp); INP_UNLOCK_ASSERT(inp); /* safe, we have a ref on the inp */ NET_EPOCH_EXIT(et); @@ -1454,6 +1455,7 @@ do_close_con_rpl(struct sge_iq *iq, const struct rss_header *rss, switch (tp->t_state) { case TCPS_CLOSING: /* see TCPS_FIN_WAIT_2 in do_peer_close too */ restore_so_proto(so, inp->inp_vflag & INP_IPV6); + t4_pcb_detach(NULL, tp); tcp_twstart(tp); release: INP_UNLOCK_ASSERT(inp); /* safe, we have a ref on the inp */ diff --git a/sys/dev/cxgbe/tom/t4_tom.c b/sys/dev/cxgbe/tom/t4_tom.c index 3fe34c7c01a3..10ee78681365 100644 --- a/sys/dev/cxgbe/tom/t4_tom.c +++ b/sys/dev/cxgbe/tom/t4_tom.c @@ -359,7 +359,7 @@ release_offload_resources(struct toepcb *toep) * Also gets called when an offloaded active open fails and the TOM wants the * kernel to take the TCP PCB back. */ -static void +void t4_pcb_detach(struct toedev *tod __unused, struct tcpcb *tp) { #if defined(KTR) || defined(INVARIANTS) diff --git a/sys/dev/cxgbe/tom/t4_tom.h b/sys/dev/cxgbe/tom/t4_tom.h index 805d8bc0d644..fb74642d61f7 100644 --- a/sys/dev/cxgbe/tom/t4_tom.h +++ b/sys/dev/cxgbe/tom/t4_tom.h @@ -468,6 +468,7 @@ __be32 calc_options2(struct vi_info *, struct conn_params *); uint64_t select_ntuple(struct vi_info *, struct l2t_entry *); int negative_advice(int); int add_tid_to_history(struct adapter *, u_int); +void t4_pcb_detach(struct toedev *, struct tcpcb *); /* t4_connect.c */ void t4_init_connect_cpl_handlers(void);
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