| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20080828011344.7987.81606.stgit@jtkirshe-mobile.jf.intel.com>
Date: Wed, 27 Aug 2008 18:13:44 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: jeff@...zik.org, tgraf@...g.ch
Cc: netdev@...r.kernel.org, davem@...emloft.net,
Alexander Duyck <alexander.h.duyck@...el.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [PATCH 2/3] IPROUTE: add support for skbedit action
From: Alexander Duyck <alexander.h.duyck@...el.com>
Add support for skbedit action.
Provides ability to edit queue_mapping field
Provides ability to edit priority field
usage: action skbedit [queue_mapping QUEUE_MAPPING] [priority PRIORITY]
at least one option must be select, or both at the same time
Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
include/linux/tc_act/tc_skbedit.h | 23 +++++
tc/Makefile | 1
tc/m_skbedit.c | 186 +++++++++++++++++++++++++++++++++++++
3 files changed, 210 insertions(+), 0 deletions(-)
create mode 100644 include/linux/tc_act/tc_skbedit.h
create mode 100644 tc/m_skbedit.c
diff --git a/include/linux/tc_act/tc_skbedit.h b/include/linux/tc_act/tc_skbedit.h
new file mode 100644
index 0000000..3965636
--- /dev/null
+++ b/include/linux/tc_act/tc_skbedit.h
@@ -0,0 +1,23 @@
+#ifndef __LINUX_TC_SKBEDIT_H
+#define __LINUX_TC_SKBEDIT_H
+
+#include <linux/pkt_cls.h>
+
+#define SKBEDIT_F_PRIORITY 0x1
+#define SKBEDIT_F_QUEUE_MAPPING 0x2
+
+struct tc_skbedit {
+ tc_gen;
+};
+
+enum {
+ TCA_SKBEDIT_UNSPEC,
+ TCA_SKBEDIT_TM,
+ TCA_SKBEDIT_PARMS,
+ TCA_SKBEDIT_PRIORITY,
+ TCA_SKBEDIT_QUEUE_MAPPING,
+ __TCA_SKBEDIT_MAX
+};
+#define TCA_SKBEDIT_MAX (__TCA_SKBEDIT_MAX - 1)
+
+#endif
diff --git a/tc/Makefile b/tc/Makefile
index 2f3c1ea..743a946 100644
--- a/tc/Makefile
+++ b/tc/Makefile
@@ -31,6 +31,7 @@ TCMODULES += m_mirred.o
TCMODULES += m_ipt.o
TCMODULES += m_nat.o
TCMODULES += m_pedit.o
+TCMODULES += m_skbedit.o
TCMODULES += p_ip.o
TCMODULES += p_icmp.o
TCMODULES += p_tcp.o
diff --git a/tc/m_skbedit.c b/tc/m_skbedit.c
new file mode 100644
index 0000000..a889e34
--- /dev/null
+++ b/tc/m_skbedit.c
@@ -0,0 +1,186 @@
+/*
+ * m_skbedit.c SKB Editing module
+ *
+ * This program is free software; you can distribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Alexander Duyck <alexander.h.duyck@...el.com>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <dlfcn.h>
+#include "utils.h"
+#include "tc_util.h"
+#include <linux/tc_act/tc_skbedit.h>
+
+static void
+explain(void)
+{
+ fprintf(stderr, "Usage: ... skbedit "
+ "queue_mapping QUEUE_MAPPING | priority PRIORITY \n"
+ "QUEUE_MAPPING = device transmit queue to use\n"
+ "PRIORITY = classID to assign to priority field\n");
+}
+
+static void
+usage(void)
+{
+ explain();
+ exit(-1);
+}
+
+static int
+parse_skbedit(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
+ struct nlmsghdr *n)
+{
+ struct tc_skbedit sel;
+ int argc = *argc_p;
+ char **argv = *argv_p;
+ int ok = 0;
+ struct rtattr *tail;
+ unsigned int tmp;
+ __u16 queue_mapping;
+ __u32 flags = 0, priority;
+
+
+ while (argc > 0) {
+ if (matches(*argv, "skbedit") == 0) {
+ NEXT_ARG();
+ } else if (matches(*argv, "queue_mapping") == 0) {
+ flags |= SKBEDIT_F_QUEUE_MAPPING;
+ NEXT_ARG();
+ if (get_unsigned(&tmp, *argv, 10) || tmp > 65535) {
+ fprintf(stderr, "Illegal queue_mapping\n");
+ return -1;
+ }
+ queue_mapping = tmp;
+ ok++;
+ } else if (matches(*argv, "priority") == 0) {
+ flags |= SKBEDIT_F_PRIORITY;
+ NEXT_ARG();
+ if (get_tc_classid(&priority, *argv)) {
+ fprintf(stderr, "Illegal priority\n");
+ return -1;
+ }
+ ok++;
+ } else if (matches(*argv, "help") == 0) {
+ usage();
+ } else {
+ break;
+ }
+ argc--;
+ argv++;
+ }
+
+ if (argc) {
+ if (matches(*argv, "reclassify") == 0) {
+ sel.action = TC_ACT_RECLASSIFY;
+ NEXT_ARG();
+ } else if (matches(*argv, "pipe") == 0) {
+ sel.action = TC_ACT_PIPE;
+ NEXT_ARG();
+ } else if (matches(*argv, "drop") == 0 ||
+ matches(*argv, "shot") == 0) {
+ sel.action = TC_ACT_SHOT;
+ NEXT_ARG();
+ } else if (matches(*argv, "continue") == 0) {
+ sel.action = TC_ACT_UNSPEC;
+ NEXT_ARG();
+ } else if (matches(*argv, "pass") == 0) {
+ sel.action = TC_ACT_OK;
+ NEXT_ARG();
+ }
+ }
+
+ if (argc) {
+ if (matches(*argv, "index") == 0) {
+ NEXT_ARG();
+ if (get_u32(&sel.index, *argv, 10)) {
+ fprintf(stderr, "Pedit: Illegal \"index\"\n");
+ return -1;
+ }
+ argc--;
+ argv++;
+ ok++;
+ }
+ }
+
+ if (!ok) {
+ explain();
+ return -1;
+ }
+
+
+ tail = NLMSG_TAIL(n);
+ addattr_l(n, MAX_MSG, tca_id, NULL, 0);
+ addattr_l(n, MAX_MSG, TCA_SKBEDIT_PARMS, &sel, sizeof(sel));
+ if (flags & SKBEDIT_F_QUEUE_MAPPING)
+ addattr_l(n, MAX_MSG, TCA_SKBEDIT_QUEUE_MAPPING,
+ &queue_mapping, sizeof(queue_mapping));
+ if (flags & SKBEDIT_F_PRIORITY)
+ addattr_l(n, MAX_MSG, TCA_SKBEDIT_PRIORITY,
+ &priority, sizeof(priority));
+ tail->rta_len = (char *)NLMSG_TAIL(n) - (char *)tail;
+
+ *argc_p = argc;
+ *argv_p = argv;
+ return 0;
+}
+
+static int print_skbedit(struct action_util *au, FILE *f, struct rtattr *arg)
+{
+ struct tc_skbedit *sel;
+ struct rtattr *tb[TCA_SKBEDIT_MAX + 1];
+ SPRINT_BUF(b1);
+ __u32 *priority;
+ __u16 *queue_mapping;
+
+ if (arg == NULL)
+ return -1;
+
+ parse_rtattr_nested(tb, TCA_SKBEDIT_MAX, arg);
+
+ if (tb[TCA_SKBEDIT_PARMS] == NULL) {
+ fprintf(f, "[NULL skbedit parameters]");
+ return -1;
+ }
+
+ sel = RTA_DATA(tb[TCA_SKBEDIT_PARMS]);
+
+ fprintf(f, " skbedit");
+
+ if (tb[TCA_SKBEDIT_QUEUE_MAPPING] != NULL) {
+ queue_mapping = RTA_DATA(tb[TCA_SKBEDIT_QUEUE_MAPPING]);
+ fprintf(f, " queue_mapping %u", *queue_mapping);
+ }
+ if (tb[TCA_SKBEDIT_PRIORITY] != NULL) {
+ priority = RTA_DATA(tb[TCA_SKBEDIT_PRIORITY]);
+ fprintf(f, " priority %s", sprint_tc_classid(*priority, b1));
+ }
+
+ if (show_stats) {
+ if (tb[TCA_SKBEDIT_TM]) {
+ struct tcf_t *tm = RTA_DATA(tb[TCA_SKBEDIT_TM]);
+ print_tm(f, tm);
+ }
+ }
+
+ return 0;
+}
+
+struct action_util skbedit_action_util = {
+ .id = "skbedit",
+ .parse_aopt = parse_skbedit,
+ .print_aopt = print_skbedit,
+};
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists