Date: Fri, 25 Mar 2016 02:54:13 +0000 (UTC) From: Sepherosa Ziehau <sephe@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r297265 - head/sys/netinet Message-ID: <201603250254.u2P2sDJa058189@repo.freebsd.org>
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Author: sephe Date: Fri Mar 25 02:54:13 2016 New Revision: 297265 URL: https://svnweb.freebsd.org/changeset/base/297265 Log: tcp/lro: Return TCP_LRO_NO_ENTRIES if we are short of LRO entries. So that callers could react accordingly. Reviewed by: gallatin (no objection) MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D5695 Modified: head/sys/netinet/tcp_lro.c head/sys/netinet/tcp_lro.h Modified: head/sys/netinet/tcp_lro.c ============================================================================== --- head/sys/netinet/tcp_lro.c Fri Mar 25 01:02:12 2016 (r297264) +++ head/sys/netinet/tcp_lro.c Fri Mar 25 02:54:13 2016 (r297265) @@ -690,7 +690,7 @@ tcp_lro_rx(struct lro_ctrl *lc, struct m /* Try to find an empty slot. */ if (SLIST_EMPTY(&lc->lro_free)) - return (TCP_LRO_CANNOT); + return (TCP_LRO_NO_ENTRIES); /* Start a new segment chain. */ le = SLIST_FIRST(&lc->lro_free); Modified: head/sys/netinet/tcp_lro.h ============================================================================== --- head/sys/netinet/tcp_lro.h Fri Mar 25 01:02:12 2016 (r297264) +++ head/sys/netinet/tcp_lro.h Fri Mar 25 02:54:13 2016 (r297265) @@ -110,6 +110,7 @@ void tcp_lro_flush_all(struct lro_ctrl * int tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t); void tcp_lro_queue_mbuf(struct lro_ctrl *, struct mbuf *); +#define TCP_LRO_NO_ENTRIES -2 #define TCP_LRO_CANNOT -1 #define TCP_LRO_NOT_SUPPORTED 1
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