iplink: add gro_max_size attribute handling

Add the ability to display or change the gro_max_size attribute.

ip link set dev eth1 gro_max_size 60000
ip -d link show eth1
5: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9198 qdisc mq master eth0 state UP mode DEFAULT group default qlen 1000
    link/ether bc:ae:c5:39:69:66 brd ff:ff:ff:ff:ff:ff promiscuity 0 minmtu 46 maxmtu 9600
    <...> gro_max_size 60000

Signed-off-by: Coco Li <lixiaoyan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David Ahern <dsahern@kernel.org>

diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index 4109d8bd2c43640bee40656c124ea6393d95a345..739b0b9c9f348141b0e51f6231b547385af00eae 100644 (file)
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -1219,6 +1219,12 @@ int print_linkinfo(struct nlmsghdr *n, void *arg)
                                   "gso_max_segs %u ",
                                   rta_getattr_u32(tb[IFLA_GSO_MAX_SEGS]));
 
+               if (tb[IFLA_GRO_MAX_SIZE])
+                       print_uint(PRINT_ANY,
+                                  "gro_max_size",
+                                  "gro_max_size %u ",
+                                  rta_getattr_u32(tb[IFLA_GRO_MAX_SIZE]));
+
                if (tb[IFLA_PHYS_PORT_NAME])
                        print_string(PRINT_ANY,
                                     "phys_port_name",

diff --git a/ip/iplink.c b/ip/iplink.c
index a3ea775d2b23c47916e9554b8615d430a58c6a55..c0a3a9ad3e629986ee2da0ee80eaf758f98aee5f 100644 (file)
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -118,6 +118,7 @@ void iplink_usage(void)
                "               [ protodown { on | off } ]\n"
                "               [ protodown_reason PREASON { on | off } ]\n"
                "               [ gso_max_size BYTES ] | [ gso_max_segs PACKETS ]\n"
+               "               [ gro_max_size BYTES ]\n"
                "\n"
                "       ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]\n"
                "               [nomaster]\n"
@@ -942,6 +943,15 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req, char **type)
                                       *argv);
                        addattr32(&req->n, sizeof(*req),
                                  IFLA_GSO_MAX_SEGS, max_segs);
+               }  else if (strcmp(*argv, "gro_max_size") == 0) {
+                       unsigned int max_size;
+
+                       NEXT_ARG();
+                       if (get_unsigned(&max_size, *argv, 0))
+                               invarg("Invalid \"gro_max_size\" value\n",
+                                      *argv);
+                       addattr32(&req->n, sizeof(*req),
+                                 IFLA_GRO_MAX_SIZE, max_size);
                } else if (strcmp(*argv, "parentdev") == 0) {
                        NEXT_ARG();
                        addattr_l(&req->n, sizeof(*req), IFLA_PARENT_DEV_NAME,