Date: Fri, 17 Nov 2023 17:24:53 GMT From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 43f7e2166810 - main - ng_ksocket: fix accept(2) Message-ID: <202311171724.3AHHOr9Z008259@gitrepo.freebsd.org>
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The branch main has been updated by glebius: URL: https://cgit.FreeBSD.org/src/commit/?id=43f7e21668105cc5a3c66eae5ecef0203c2df62f commit 43f7e21668105cc5a3c66eae5ecef0203c2df62f Author: Gleb Smirnoff <glebius@FreeBSD.org> AuthorDate: 2023-11-17 17:24:30 +0000 Commit: Gleb Smirnoff <glebius@FreeBSD.org> CommitDate: 2023-11-17 17:24:30 +0000 ng_ksocket: fix accept(2) - Provide listen upcall and set it on NGM_KSOCKET_LISTEN - Mask EWOULDBLOCK on NGM_KSOCKET_ACCEPT Reviewed by: afedorov Differential Revision: https://reviews.freebsd.org/D42637 PR: 272319 PR: 275106 Fixes: 779f106aa169256b7010a1d8f963ff656b881e92 --- sys/netgraph/ng_ksocket.c | 41 +++++++++++++++++++++++++++++++++++------ 1 file changed, 35 insertions(+), 6 deletions(-) diff --git a/sys/netgraph/ng_ksocket.c b/sys/netgraph/ng_ksocket.c index 337248789473..777f3261356d 100644 --- a/sys/netgraph/ng_ksocket.c +++ b/sys/netgraph/ng_ksocket.c @@ -152,6 +152,10 @@ static const struct ng_ksocket_alias ng_ksocket_protos[] = { /* Helper functions */ static int ng_ksocket_accept(priv_p); +static int ng_ksocket_listen_upcall(struct socket *so, void *arg, + int waitflag); +static void ng_ksocket_listen_upcall2(node_p node, hook_p hook, + void *arg1, int arg2); static int ng_ksocket_incoming(struct socket *so, void *arg, int waitflag); static int ng_ksocket_parse(const struct ng_ksocket_alias *aliases, const char *s, int family); @@ -695,6 +699,12 @@ ng_ksocket_rcvmsg(node_p node, item_p item, hook_p lasthook) /* Listen */ so->so_state |= SS_NBIO; error = solisten(so, *((int32_t *)msg->data), td); + if (error == 0) { + SOLISTEN_LOCK(so); + solisten_upcall_set(so, + ng_ksocket_listen_upcall, priv); + SOLISTEN_UNLOCK(so); + } break; } @@ -715,11 +725,15 @@ ng_ksocket_rcvmsg(node_p node, item_p item, hook_p lasthook) /* * If a connection is already complete, take it. * Otherwise let the upcall function deal with - * the connection when it comes in. + * the connection when it comes in. Don't return + * EWOULDBLOCK, per ng_ksocket(4) documentation. */ error = ng_ksocket_accept(priv); - if (error != 0 && error != EWOULDBLOCK) + if (error == EWOULDBLOCK) + error = 0; + if (error != 0) ERROUT(error); + priv->response_token = msg->header.token; priv->response_addr = NGI_RETADDR(item); break; @@ -1064,10 +1078,6 @@ ng_ksocket_incoming2(node_p node, hook_p hook, void *arg1, int arg2) } } - /* Check whether a pending accept operation has completed */ - if (priv->flags & KSF_ACCEPTING) - (void )ng_ksocket_accept(priv); - /* * If we don't have a hook, we must handle data events later. When * the hook gets created and is connected, this upcall function @@ -1250,6 +1260,25 @@ out: return (0); } +static int +ng_ksocket_listen_upcall(struct socket *so, void *arg, int waitflag) +{ + priv_p priv = arg; + int wait = ((waitflag & M_WAITOK) ? NG_WAITOK : 0) | NG_QUEUE; + + ng_send_fn1(priv->node, NULL, &ng_ksocket_listen_upcall2, priv, 0, + wait); + return (SU_OK); +} + +static void +ng_ksocket_listen_upcall2(node_p node, hook_p hook, void *arg1, int arg2) +{ + const priv_p priv = NG_NODE_PRIVATE(node); + + (void )ng_ksocket_accept(priv); +} + /* * Parse out either an integer value or an alias. */
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