From owner-dev-commits-src-all@freebsd.org Mon Mar 29 16:36:01 2021 Return-Path: Delivered-To: dev-commits-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id AF15857CD22; Mon, 29 Mar 2021 16:36:01 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4F8J9Y4WrCz3tQT; Mon, 29 Mar 2021 16:36:01 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7F9D41617C; Mon, 29 Mar 2021 16:36:01 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 12TGa1Dk071477; Mon, 29 Mar 2021 16:36:01 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 12TGa1UO071476; Mon, 29 Mar 2021 16:36:01 GMT (envelope-from git) Date: Mon, 29 Mar 2021 16:36:01 GMT Message-Id: <202103291636.12TGa1UO071476@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Vincenzo Maffione Subject: git: 660a47cb991d - main - netmap: monitor: add a flag to distinguish packet direction MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: vmaffione X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 660a47cb991d5a7ca69cd8dd9c09a5288d49e405 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Mar 2021 16:36:01 -0000 The branch main has been updated by vmaffione: URL: https://cgit.FreeBSD.org/src/commit/?id=660a47cb991d5a7ca69cd8dd9c09a5288d49e405 commit 660a47cb991d5a7ca69cd8dd9c09a5288d49e405 Author: Vincenzo Maffione AuthorDate: 2021-03-29 16:32:54 +0000 Commit: Vincenzo Maffione CommitDate: 2021-03-29 16:32:54 +0000 netmap: monitor: add a flag to distinguish packet direction The netmap monitor intercepts any TX/RX packets on the monitored port. However, before this change there was no way to tell whether an intercepted packet was being transmitted or received on the monitored port. A TXMON flag in the netmap slot has been added for this purpose. --- sys/dev/netmap/netmap_monitor.c | 8 ++++++-- sys/net/netmap.h | 5 +++++ 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/sys/dev/netmap/netmap_monitor.c b/sys/dev/netmap/netmap_monitor.c index 1f5ff65b3b81..9e5d57f7ff0f 100644 --- a/sys/dev/netmap/netmap_monitor.c +++ b/sys/dev/netmap/netmap_monitor.c @@ -38,6 +38,8 @@ * the traffic transiting on both the tx and rx corresponding rings in the * monitored adapter. During registration, the user can choose if she wants * to intercept tx only, rx only, or both tx and rx traffic. + * The slots containing traffic intercepted in the tx direction will have + * the NS_TXMON flag set. * * If the monitor is not able to cope with the stream of frames, excess traffic * will be dropped. @@ -590,6 +592,7 @@ netmap_zmon_parent_sync(struct netmap_kring *kring, int flags, enum txrx tx) u_int beg, end, i; u_int lim = kring->nkr_num_slots - 1, mlim; // = mkring->nkr_num_slots - 1; + uint16_t txmon = kring->tx == NR_TX ? NS_TXMON : 0; if (mkring == NULL) { nm_prlim(5, "NULL monitor on %s", kring->name); @@ -659,7 +662,7 @@ netmap_zmon_parent_sync(struct netmap_kring *kring, int flags, enum txrx tx) ms->len = s->len; s->len = tmp; - ms->flags = s->flags; + ms->flags = (s->flags & ~NS_TXMON) | txmon; s->flags |= NS_BUF_CHANGED; beg = nm_next(beg, lim); @@ -726,6 +729,7 @@ static void netmap_monitor_parent_sync(struct netmap_kring *kring, u_int first_new, int new_slots) { u_int j; + uint16_t txmon = kring->tx == NR_TX ? NS_TXMON : 0; for (j = 0; j < kring->n_monitors; j++) { struct netmap_kring *mkring = kring->monitors[j]; @@ -777,7 +781,7 @@ netmap_monitor_parent_sync(struct netmap_kring *kring, u_int first_new, int new_ memcpy(dst, src, copy_len); ms->len = copy_len; - ms->flags = s->flags; + ms->flags = (s->flags & ~NS_TXMON) | txmon; sent++; beg = nm_next(beg, lim); diff --git a/sys/net/netmap.h b/sys/net/netmap.h index 7da40d6869f1..57480cba4ebd 100644 --- a/sys/net/netmap.h +++ b/sys/net/netmap.h @@ -219,6 +219,11 @@ struct netmap_slot { * The 'len' field refers to the individual fragment. */ +#define NS_TXMON 0x0040 + /* (monitor ports only) the packet comes from the TX + * ring of the monitored port + */ + #define NS_PORT_SHIFT 8 #define NS_PORT_MASK (0xff << NS_PORT_SHIFT) /*