Date: Thu, 1 Sep 2016 08:01:13 +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: r305189 - stable/10/sys/netinet Message-ID: <201609010801.u8181D3l056625@repo.freebsd.org>
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Author: sephe Date: Thu Sep 1 08:01:13 2016 New Revision: 305189 URL: https://svnweb.freebsd.org/changeset/base/305189 Log: MFC 304202 tcp/lro: Make # of LRO entries tunable Reviewed by: hps, gallatin Obtained from: rrs, gallatin Sponsored by: Netflix (rrs, gallatin), Microsoft (sephe) Differential Revision: https://reviews.freebsd.org/D7499 Modified: stable/10/sys/netinet/tcp_lro.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/netinet/tcp_lro.c ============================================================================== --- stable/10/sys/netinet/tcp_lro.c Thu Sep 1 07:53:59 2016 (r305188) +++ stable/10/sys/netinet/tcp_lro.c Thu Sep 1 08:01:13 2016 (r305189) @@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$"); #include <sys/mbuf.h> #include <sys/kernel.h> #include <sys/socket.h> +#include <sys/sysctl.h> #include <net/if.h> #include <net/if_var.h> @@ -53,6 +54,7 @@ __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> @@ -67,6 +69,14 @@ __FBSDID("$FreeBSD$"); #define TCP_LRO_INVALID_CSUM 0x0000 #endif +SYSCTL_NODE(_net_inet_tcp, OID_AUTO, lro, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, + "TCP LRO"); + +static unsigned tcp_lro_entries = LRO_ENTRIES; +SYSCTL_UINT(_net_inet_tcp_lro, OID_AUTO, entries, + CTLFLAG_RDTUN | CTLFLAG_MPSAFE, &tcp_lro_entries, 0, + "default number of LRO entries"); + int tcp_lro_init(struct lro_ctrl *lc) { @@ -81,7 +91,7 @@ tcp_lro_init(struct lro_ctrl *lc) SLIST_INIT(&lc->lro_active); error = 0; - for (i = 0; i < LRO_ENTRIES; i++) { + for (i = 0; i < tcp_lro_entries; i++) { le = (struct lro_entry *)malloc(sizeof(*le), M_DEVBUF, M_NOWAIT | M_ZERO); if (le == NULL) {
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