Date: Thu, 16 Jun 2016 04:21:27 +0000 (UTC) From: Sepherosa Ziehau <sephe@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r301949 - stable/10/sys/netinet Message-ID: <201606160421.u5G4LRx2074327@repo.freebsd.org>
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Author: sephe Date: Thu Jun 16 04:21:27 2016 New Revision: 301949 URL: https://svnweb.freebsd.org/changeset/base/301949 Log: MFC 297265 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: stable/10/sys/netinet/tcp_lro.c stable/10/sys/netinet/tcp_lro.h Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/netinet/tcp_lro.c ============================================================================== --- stable/10/sys/netinet/tcp_lro.c Thu Jun 16 03:25:26 2016 (r301948) +++ stable/10/sys/netinet/tcp_lro.c Thu Jun 16 04:21:27 2016 (r301949) @@ -570,7 +570,7 @@ 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: stable/10/sys/netinet/tcp_lro.h ============================================================================== --- stable/10/sys/netinet/tcp_lro.h Thu Jun 16 03:25:26 2016 (r301948) +++ stable/10/sys/netinet/tcp_lro.h Thu Jun 16 04:21:27 2016 (r301949) @@ -90,6 +90,7 @@ void tcp_lro_flush_inactive(struct lro_c void tcp_lro_flush(struct lro_ctrl *, struct lro_entry *); int tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t); +#define TCP_LRO_NO_ENTRIES -2 #define TCP_LRO_CANNOT -1 #define TCP_LRO_NOT_SUPPORTED 1
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