Date: Tue, 16 Aug 2016 06:40:27 +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: r304202 - head/sys/netinet Message-ID: <201608160640.u7G6eRGg047550@repo.freebsd.org>
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Author: sephe Date: Tue Aug 16 06:40:27 2016 New Revision: 304202 URL: https://svnweb.freebsd.org/changeset/base/304202 Log: tcp/lro: Make # of LRO entries tunable Reviewed by: hps, gallatin Obtained from: rrs, gallatin MFC after: 2 weeks Sponsored by: Netflix (rrs, gallatin), Microsoft (sephe) Differential Revision: https://reviews.freebsd.org/D7499 Modified: head/sys/netinet/tcp_lro.c Modified: head/sys/netinet/tcp_lro.c ============================================================================== --- head/sys/netinet/tcp_lro.c Tue Aug 16 02:34:25 2016 (r304201) +++ head/sys/netinet/tcp_lro.c Tue Aug 16 06:40:27 2016 (r304202) @@ -42,6 +42,7 @@ __FBSDID("$FreeBSD$"); #include <sys/malloc.h> #include <sys/mbuf.h> #include <sys/socket.h> +#include <sys/sysctl.h> #include <net/if.h> #include <net/if_var.h> @@ -55,6 +56,7 @@ __FBSDID("$FreeBSD$"); #include <netinet/ip_var.h> #include <netinet/tcp.h> #include <netinet/tcp_lro.h> +#include <netinet/tcp_var.h> #include <netinet6/ip6_var.h> @@ -71,6 +73,14 @@ static void tcp_lro_rx_done(struct lro_c static int tcp_lro_rx2(struct lro_ctrl *lc, struct mbuf *m, uint32_t csum, int use_hash); +SYSCTL_NODE(_net_inet_tcp, OID_AUTO, lro, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, + "TCP LRO"); + +static unsigned tcp_lro_entries = TCP_LRO_ENTRIES; +SYSCTL_UINT(_net_inet_tcp_lro, OID_AUTO, entries, + CTLFLAG_RDTUN | CTLFLAG_MPSAFE, &tcp_lro_entries, 0, + "default number of LRO entries"); + static __inline void tcp_lro_active_insert(struct lro_ctrl *lc, struct lro_head *bucket, struct lro_entry *le) @@ -91,7 +101,7 @@ tcp_lro_active_remove(struct lro_entry * int tcp_lro_init(struct lro_ctrl *lc) { - return (tcp_lro_init_args(lc, NULL, TCP_LRO_ENTRIES, 0)); + return (tcp_lro_init_args(lc, NULL, tcp_lro_entries, 0)); } int
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