* [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support
@ 2016-09-22 6:28 Hangbin Liu
2016-09-22 6:28 ` [PATCH iproute2 1/2] ip rule: merge ip rule flush and list, save together Hangbin Liu
` (3 more replies)
0 siblings, 4 replies; 7+ messages in thread
From: Hangbin Liu @ 2016-09-22 6:28 UTC (permalink / raw)
To: netdev; +Cc: Stephen Hemminger, Phil Sutter, Hangbin Liu
When merge iprule_flush() and iprule_list_or_save(). Renamed
rtnl_filter_t filter to filter_fn because we want to use global
variable 'filter' to filter nlmsg in the next patch.
Hangbin Liu (2):
ip rule: merge ip rule flush and list, save together
ip rule: add selector support
ip/iprule.c | 295 +++++++++++++++++++++++++++++++++++++++++------------
man/man8/ip-rule.8 | 6 +-
2 files changed, 231 insertions(+), 70 deletions(-)
--
2.5.5
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH iproute2 1/2] ip rule: merge ip rule flush and list, save together
2016-09-22 6:28 [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support Hangbin Liu
@ 2016-09-22 6:28 ` Hangbin Liu
2016-09-22 6:28 ` [PATCH iproute2 2/2] ip rule: add selector support Hangbin Liu
` (2 subsequent siblings)
3 siblings, 0 replies; 7+ messages in thread
From: Hangbin Liu @ 2016-09-22 6:28 UTC (permalink / raw)
To: netdev; +Cc: Stephen Hemminger, Phil Sutter, Hangbin Liu
iprule_flush() and iprule_list_or_save() both call function
rtnl_wilddump_request() and rtnl_dump_filter(). So merge them
together just like other files do.
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
ip/iprule.c | 121 +++++++++++++++++++++++++++---------------------------------
1 file changed, 54 insertions(+), 67 deletions(-)
diff --git a/ip/iprule.c b/ip/iprule.c
index 70562c5..e18505f 100644
--- a/ip/iprule.c
+++ b/ip/iprule.c
@@ -27,6 +27,12 @@
#include "utils.h"
#include "ip_common.h"
+enum list_action {
+ IPRULE_LIST,
+ IPRULE_FLUSH,
+ IPRULE_SAVE,
+};
+
extern struct rtnl_handle rth;
static void usage(void) __attribute__((noreturn));
@@ -243,24 +249,61 @@ static int save_rule(const struct sockaddr_nl *who,
return ret == n->nlmsg_len ? 0 : ret;
}
-static int iprule_list_or_save(int argc, char **argv, int save)
+static int flush_rule(const struct sockaddr_nl *who, struct nlmsghdr *n,
+ void *arg)
+{
+ struct rtnl_handle rth2;
+ struct rtmsg *r = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct rtattr *tb[FRA_MAX+1];
+
+ len -= NLMSG_LENGTH(sizeof(*r));
+ if (len < 0)
+ return -1;
+
+ parse_rtattr(tb, FRA_MAX, RTM_RTA(r), len);
+
+ if (tb[FRA_PRIORITY]) {
+ n->nlmsg_type = RTM_DELRULE;
+ n->nlmsg_flags = NLM_F_REQUEST;
+
+ if (rtnl_open(&rth2, 0) < 0)
+ return -1;
+
+ if (rtnl_talk(&rth2, n, NULL, 0) < 0)
+ return -2;
+
+ rtnl_close(&rth2);
+ }
+
+ return 0;
+}
+
+static int iprule_list_flush_or_save(int argc, char **argv, int action)
{
- rtnl_filter_t filter = print_rule;
+ rtnl_filter_t filter_fn;
int af = preferred_family;
if (af == AF_UNSPEC)
af = AF_INET;
if (argc > 0) {
- fprintf(stderr, "\"ip rule %s\" does not take any arguments.\n",
- save ? "save" : "show");
+ fprintf(stderr,
+ "\"ip rule list/flush/save\" does not take any arguments\n");
return -1;
}
- if (save) {
+ switch (action) {
+ case IPRULE_SAVE:
if (save_rule_prep())
return -1;
- filter = save_rule;
+ filter_fn = save_rule;
+ break;
+ case IPRULE_FLUSH:
+ filter_fn = flush_rule;
+ break;
+ default:
+ filter_fn = print_rule;
}
if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) {
@@ -268,7 +311,7 @@ static int iprule_list_or_save(int argc, char **argv, int save)
return 1;
}
- if (rtnl_dump_filter(&rth, filter, stdout) < 0) {
+ if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
return 1;
}
@@ -511,72 +554,16 @@ static int iprule_modify(int cmd, int argc, char **argv)
return 0;
}
-
-static int flush_rule(const struct sockaddr_nl *who, struct nlmsghdr *n,
- void *arg)
-{
- struct rtnl_handle rth2;
- struct rtmsg *r = NLMSG_DATA(n);
- int len = n->nlmsg_len;
- struct rtattr *tb[FRA_MAX+1];
-
- len -= NLMSG_LENGTH(sizeof(*r));
- if (len < 0)
- return -1;
-
- parse_rtattr(tb, FRA_MAX, RTM_RTA(r), len);
-
- if (tb[FRA_PRIORITY]) {
- n->nlmsg_type = RTM_DELRULE;
- n->nlmsg_flags = NLM_F_REQUEST;
-
- if (rtnl_open(&rth2, 0) < 0)
- return -1;
-
- if (rtnl_talk(&rth2, n, NULL, 0) < 0)
- return -2;
-
- rtnl_close(&rth2);
- }
-
- return 0;
-}
-
-static int iprule_flush(int argc, char **argv)
-{
- int af = preferred_family;
-
- if (af == AF_UNSPEC)
- af = AF_INET;
-
- if (argc > 0) {
- fprintf(stderr, "\"ip rule flush\" does not allow arguments\n");
- return -1;
- }
-
- if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) {
- perror("Cannot send dump request");
- return 1;
- }
-
- if (rtnl_dump_filter(&rth, flush_rule, NULL) < 0) {
- fprintf(stderr, "Flush terminated\n");
- return 1;
- }
-
- return 0;
-}
-
int do_iprule(int argc, char **argv)
{
if (argc < 1) {
- return iprule_list_or_save(0, NULL, 0);
+ return iprule_list_flush_or_save(0, NULL, IPRULE_LIST);
} else if (matches(argv[0], "list") == 0 ||
matches(argv[0], "lst") == 0 ||
matches(argv[0], "show") == 0) {
- return iprule_list_or_save(argc-1, argv+1, 0);
+ return iprule_list_flush_or_save(argc-1, argv+1, IPRULE_LIST);
} else if (matches(argv[0], "save") == 0) {
- return iprule_list_or_save(argc-1, argv+1, 1);
+ return iprule_list_flush_or_save(argc-1, argv+1, IPRULE_SAVE);
} else if (matches(argv[0], "restore") == 0) {
return iprule_restore();
} else if (matches(argv[0], "add") == 0) {
@@ -584,7 +571,7 @@ int do_iprule(int argc, char **argv)
} else if (matches(argv[0], "delete") == 0) {
return iprule_modify(RTM_DELRULE, argc-1, argv+1);
} else if (matches(argv[0], "flush") == 0) {
- return iprule_flush(argc-1, argv+1);
+ return iprule_list_flush_or_save(argc-1, argv+1, IPRULE_FLUSH);
} else if (matches(argv[0], "help") == 0)
usage();
--
2.5.5
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH iproute2 2/2] ip rule: add selector support
2016-09-22 6:28 [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support Hangbin Liu
2016-09-22 6:28 ` [PATCH iproute2 1/2] ip rule: merge ip rule flush and list, save together Hangbin Liu
@ 2016-09-22 6:28 ` Hangbin Liu
2016-09-22 8:45 ` Phil Sutter
2016-09-22 23:43 ` [PATCH iproute2 0/2] ip rule: merger iprule_flush and " Stephen Hemminger
2016-10-10 2:30 ` Stephen Hemminger
3 siblings, 1 reply; 7+ messages in thread
From: Hangbin Liu @ 2016-09-22 6:28 UTC (permalink / raw)
To: netdev; +Cc: Stephen Hemminger, Phil Sutter, Hangbin Liu
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
ip/iprule.c | 180 +++++++++++++++++++++++++++++++++++++++++++++++++++--
man/man8/ip-rule.8 | 6 +-
2 files changed, 180 insertions(+), 6 deletions(-)
diff --git a/ip/iprule.c b/ip/iprule.c
index e18505f..42fb6af 100644
--- a/ip/iprule.c
+++ b/ip/iprule.c
@@ -20,6 +20,7 @@
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <string.h>
+#include <linux/if.h>
#include <linux/fib_rules.h>
#include <errno.h>
@@ -41,7 +42,7 @@ static void usage(void)
{
fprintf(stderr, "Usage: ip rule { add | del } SELECTOR ACTION\n");
fprintf(stderr, " ip rule { flush | save | restore }\n");
- fprintf(stderr, " ip rule [ list ]\n");
+ fprintf(stderr, " ip rule [ list [ SELECTOR ]]\n");
fprintf(stderr, "SELECTOR := [ not ] [ from PREFIX ] [ to PREFIX ] [ tos TOS ] [ fwmark FWMARK[/MASK] ]\n");
fprintf(stderr, " [ iif STRING ] [ oif STRING ] [ pref NUMBER ] [ l3mdev ]\n");
fprintf(stderr, "ACTION := [ table TABLE_ID ]\n");
@@ -55,6 +56,105 @@ static void usage(void)
exit(-1);
}
+static struct
+{
+ int not;
+ int l3mdev;
+ int iifmask, oifmask;
+ unsigned int tb;
+ unsigned int tos, tosmask;
+ unsigned int pref, prefmask;
+ unsigned int fwmark, fwmask;
+ char iif[IFNAMSIZ];
+ char oif[IFNAMSIZ];
+ inet_prefix src;
+ inet_prefix dst;
+} filter;
+
+static bool filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len)
+{
+ struct rtmsg *r = NLMSG_DATA(n);
+ inet_prefix src = { .family = r->rtm_family };
+ inet_prefix dst = { .family = r->rtm_family };
+ __u32 table;
+
+ if (preferred_family != AF_UNSPEC && r->rtm_family != preferred_family)
+ return false;
+
+ if (filter.prefmask &&
+ filter.pref ^ (tb[FRA_PRIORITY] ? rta_getattr_u32(tb[FRA_PRIORITY]) : 0))
+ return false;
+ if (filter.not && !(r->rtm_flags & FIB_RULE_INVERT))
+ return false;
+
+ if (filter.src.family) {
+ if (tb[FRA_SRC]) {
+ memcpy(&src.data, RTA_DATA(tb[FRA_SRC]),
+ (r->rtm_src_len + 7) / 8);
+ }
+ if (filter.src.family != r->rtm_family ||
+ filter.src.bitlen > r->rtm_src_len ||
+ inet_addr_match(&src, &filter.src, filter.src.bitlen))
+ return false;
+ }
+
+ if (filter.dst.family) {
+ if (tb[FRA_DST]) {
+ memcpy(&dst.data, RTA_DATA(tb[FRA_DST]),
+ (r->rtm_dst_len + 7) / 8);
+ }
+ if (filter.dst.family != r->rtm_family ||
+ filter.dst.bitlen > r->rtm_dst_len ||
+ inet_addr_match(&dst, &filter.dst, filter.dst.bitlen))
+ return false;
+ }
+
+ if (filter.tosmask && filter.tos ^ r->rtm_tos)
+ return false;
+
+ if (filter.fwmark) {
+ __u32 mark = 0;
+ if (tb[FRA_FWMARK])
+ mark = rta_getattr_u32(tb[FRA_FWMARK]);
+ if (filter.fwmark ^ mark)
+ return false;
+ }
+ if (filter.fwmask) {
+ __u32 mask = 0;
+ if (tb[FRA_FWMASK])
+ mask = rta_getattr_u32(tb[FRA_FWMASK]);
+ if (filter.fwmask ^ mask)
+ return false;
+ }
+
+ if (filter.iifmask) {
+ if (tb[FRA_IFNAME]) {
+ if (strcmp(filter.iif, rta_getattr_str(tb[FRA_IFNAME])) != 0)
+ return false;
+ } else {
+ return false;
+ }
+ }
+
+ if (filter.oifmask) {
+ if (tb[FRA_OIFNAME]) {
+ if (strcmp(filter.oif, rta_getattr_str(tb[FRA_OIFNAME])) != 0)
+ return false;
+ } else {
+ return false;
+ }
+ }
+
+ if (filter.l3mdev && !(tb[FRA_L3MDEV] && rta_getattr_u8(tb[FRA_L3MDEV])))
+ return false;
+
+ table = rtm_get_table(r, tb);
+ if (filter.tb > 0 && filter.tb ^ table)
+ return false;
+
+ return true;
+}
+
int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE *)arg;
@@ -77,6 +177,9 @@ int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
host_len = af_bit_len(r->rtm_family);
+ if(!filter_nlmsg(n, tb, host_len))
+ return 0;
+
if (n->nlmsg_type == RTM_DELRULE)
fprintf(fp, "Deleted ");
@@ -287,9 +390,9 @@ static int iprule_list_flush_or_save(int argc, char **argv, int action)
if (af == AF_UNSPEC)
af = AF_INET;
- if (argc > 0) {
- fprintf(stderr,
- "\"ip rule list/flush/save\" does not take any arguments\n");
+ if (action != IPRULE_LIST && argc > 0) {
+ fprintf(stderr, "\"ip rule %s\" does not take any arguments.\n",
+ action == IPRULE_SAVE ? "save" : "flush");
return -1;
}
@@ -306,6 +409,75 @@ static int iprule_list_flush_or_save(int argc, char **argv, int action)
filter_fn = print_rule;
}
+ memset(&filter, 0, sizeof(filter));
+
+ while (argc > 0) {
+ if (matches(*argv, "preference") == 0 ||
+ matches(*argv, "order") == 0 ||
+ matches(*argv, "priority") == 0) {
+ __u32 pref;
+ NEXT_ARG();
+ if (get_u32(&pref, *argv, 0))
+ invarg("preference value is invalid\n", *argv);
+ filter.pref = pref;
+ filter.prefmask = 1;
+ } else if (strcmp(*argv, "not") == 0) {
+ filter.not = 1;
+ } else if (strcmp(*argv, "tos") == 0) {
+ __u32 tos;
+ NEXT_ARG();
+ if (rtnl_dsfield_a2n(&tos, *argv))
+ invarg("TOS value is invalid\n", *argv);
+ filter.tos = tos;
+ filter.tosmask = 1;
+ } else if (strcmp(*argv, "fwmark") == 0) {
+ char *slash;
+ __u32 fwmark, fwmask;
+ NEXT_ARG();
+ slash = strchr(*argv, '/');
+ if (slash != NULL)
+ *slash = '\0';
+ if (get_u32(&fwmark, *argv, 0))
+ invarg("fwmark value is invalid\n", *argv);
+ filter.fwmark = fwmark;
+ if (slash) {
+ if (get_u32(&fwmask, slash+1, 0))
+ invarg("fwmask value is invalid\n",
+ slash+1);
+ filter.fwmask = fwmask;
+ }
+ } else if (strcmp(*argv, "dev") == 0 ||
+ strcmp(*argv, "iif") == 0) {
+ NEXT_ARG();
+ strncpy(filter.iif, *argv, IFNAMSIZ);
+ filter.iifmask = 1;
+ } else if (strcmp(*argv, "oif") == 0) {
+ NEXT_ARG();
+ strncpy(filter.oif, *argv, IFNAMSIZ);
+ filter.oifmask = 1;
+ } else if (strcmp(*argv, "l3mdev") == 0) {
+ filter.l3mdev = 1;
+ } else if (matches(*argv, "lookup") == 0 ||
+ matches(*argv, "table") == 0 ) {
+ __u32 tid;
+ NEXT_ARG();
+ if (rtnl_rttable_a2n(&tid, *argv))
+ invarg("table id value is invalid\n", *argv);
+ filter.tb = tid;
+ } else if (matches(*argv, "from") == 0 ||
+ matches(*argv, "src") == 0) {
+ NEXT_ARG();
+ get_prefix(&filter.src, *argv, af);
+ } else {
+ if (matches(*argv, "dst") == 0 ||
+ matches(*argv, "to") == 0) {
+ NEXT_ARG();
+ }
+ get_prefix(&filter.dst, *argv, af);
+ }
+ argc--; argv++;
+ }
+
if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) {
perror("Cannot send dump request");
return 1;
diff --git a/man/man8/ip-rule.8 b/man/man8/ip-rule.8
index 3508d80..ec0e31d 100644
--- a/man/man8/ip-rule.8
+++ b/man/man8/ip-rule.8
@@ -15,7 +15,8 @@ ip-rule \- routing policy database management
.ti -8
.B ip rule
-.RB "[ " list " ]"
+.RB "[ " list
+.I "[ " SELECTOR " ]]"
.ti -8
.B ip rule
@@ -42,7 +43,8 @@ ip-rule \- routing policy database management
.B oif
.IR STRING " ] [ "
.B pref
-.IR NUMBER " ]"
+.IR NUMBER " ] [ "
+.BR l3mdev " ]"
.ti -8
.IR ACTION " := [ "
--
2.5.5
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH iproute2 2/2] ip rule: add selector support
2016-09-22 6:28 ` [PATCH iproute2 2/2] ip rule: add selector support Hangbin Liu
@ 2016-09-22 8:45 ` Phil Sutter
2016-09-23 3:06 ` Hangbin Liu
0 siblings, 1 reply; 7+ messages in thread
From: Phil Sutter @ 2016-09-22 8:45 UTC (permalink / raw)
To: Hangbin Liu; +Cc: netdev, Stephen Hemminger
On Thu, Sep 22, 2016 at 02:28:49PM +0800, Hangbin Liu wrote:
[...]
> diff --git a/man/man8/ip-rule.8 b/man/man8/ip-rule.8
> index 3508d80..ec0e31d 100644
> --- a/man/man8/ip-rule.8
> +++ b/man/man8/ip-rule.8
> @@ -15,7 +15,8 @@ ip-rule \- routing policy database management
>
> .ti -8
> .B ip rule
> -.RB "[ " list " ]"
> +.RB "[ " list
> +.I "[ " SELECTOR " ]]"
This makes the brackets cursive, too. Better use this instead:
| .RI "[ " SELECTOR " ]]"
Apart from that, LGTM!
Thanks, Phil
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support
2016-09-22 6:28 [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support Hangbin Liu
2016-09-22 6:28 ` [PATCH iproute2 1/2] ip rule: merge ip rule flush and list, save together Hangbin Liu
2016-09-22 6:28 ` [PATCH iproute2 2/2] ip rule: add selector support Hangbin Liu
@ 2016-09-22 23:43 ` Stephen Hemminger
2016-10-10 2:30 ` Stephen Hemminger
3 siblings, 0 replies; 7+ messages in thread
From: Stephen Hemminger @ 2016-09-22 23:43 UTC (permalink / raw)
To: Hangbin Liu; +Cc: netdev, Phil Sutter
On Thu, 22 Sep 2016 14:28:47 +0800
Hangbin Liu <liuhangbin@gmail.com> wrote:
> When merge iprule_flush() and iprule_list_or_save(). Renamed
> rtnl_filter_t filter to filter_fn because we want to use global
> variable 'filter' to filter nlmsg in the next patch.
>
> Hangbin Liu (2):
> ip rule: merge ip rule flush and list, save together
> ip rule: add selector support
>
> ip/iprule.c | 295 +++++++++++++++++++++++++++++++++++++++++------------
> man/man8/ip-rule.8 | 6 +-
> 2 files changed, 231 insertions(+), 70 deletions(-)
>
Fix Phil's man page comment and resubmit.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH iproute2 2/2] ip rule: add selector support
2016-09-22 8:45 ` Phil Sutter
@ 2016-09-23 3:06 ` Hangbin Liu
0 siblings, 0 replies; 7+ messages in thread
From: Hangbin Liu @ 2016-09-23 3:06 UTC (permalink / raw)
To: Phil Sutter, Hangbin Liu, network dev, Stephen Hemminger
2016-09-22 16:45 GMT+08:00 Phil Sutter <phil@nwl.cc>:
> On Thu, Sep 22, 2016 at 02:28:49PM +0800, Hangbin Liu wrote:
> [...]
>> diff --git a/man/man8/ip-rule.8 b/man/man8/ip-rule.8
>> index 3508d80..ec0e31d 100644
>> --- a/man/man8/ip-rule.8
>> +++ b/man/man8/ip-rule.8
>> @@ -15,7 +15,8 @@ ip-rule \- routing policy database management
>>
>> .ti -8
>> .B ip rule
>> -.RB "[ " list " ]"
>> +.RB "[ " list
>> +.I "[ " SELECTOR " ]]"
>
> This makes the brackets cursive, too. Better use this instead:
>
> | .RI "[ " SELECTOR " ]]"
Thanks Phil, I'm not familiar with man doc syntax :)
Cheers
Hangbin
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support
2016-09-22 6:28 [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support Hangbin Liu
` (2 preceding siblings ...)
2016-09-22 23:43 ` [PATCH iproute2 0/2] ip rule: merger iprule_flush and " Stephen Hemminger
@ 2016-10-10 2:30 ` Stephen Hemminger
3 siblings, 0 replies; 7+ messages in thread
From: Stephen Hemminger @ 2016-10-10 2:30 UTC (permalink / raw)
To: Hangbin Liu; +Cc: netdev, Phil Sutter
On Thu, 22 Sep 2016 14:28:47 +0800
Hangbin Liu <liuhangbin@gmail.com> wrote:
> When merge iprule_flush() and iprule_list_or_save(). Renamed
> rtnl_filter_t filter to filter_fn because we want to use global
> variable 'filter' to filter nlmsg in the next patch.
>
> Hangbin Liu (2):
> ip rule: merge ip rule flush and list, save together
> ip rule: add selector support
>
> ip/iprule.c | 295 +++++++++++++++++++++++++++++++++++++++++------------
> man/man8/ip-rule.8 | 6 +-
> 2 files changed, 231 insertions(+), 70 deletions(-)
>
> --
Applied to net-next (for 4.9)
^ permalink raw reply [flat|nested] 7+ messages in thread
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2016-09-22 6:28 [PATCH iproute2 0/2] ip rule: merger iprule_flush and add selector support Hangbin Liu
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2016-09-22 6:28 ` [PATCH iproute2 2/2] ip rule: add selector support Hangbin Liu
2016-09-22 8:45 ` Phil Sutter
2016-09-23 3:06 ` Hangbin Liu
2016-09-22 23:43 ` [PATCH iproute2 0/2] ip rule: merger iprule_flush and " Stephen Hemminger
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