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Add support for configuring Infiniband GUIDs

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Add two NLA's that allow configuration of Infiniband node or port GUIDs
by referencing the IPoIB net device set over the physical function. The
format to be used is as follows:

ip link set dev ib0 vf 0 node_guid 00:02:c9:03:00:21:6e:70
ip link set dev ib0 vf 0 port_guid 00:02:c9:03:00:21:6e:78

Signed-off-by: Eli Cohen <eli@mellanox.com>
This commit is contained in:
Eli Cohen 2016-07-07 16:09:03 -05:00 committed by Stephen Hemminger
parent 0130f0120b
commit d91fb3f4c7
4 changed files with 67 additions and 1 deletions
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1
include/utils.h
View File

@ -248,5 +248,6 @@ int do_each_netns(int (*func)(char *nsname, void *arg), void *arg,
bool show_label);
char *int_to_str(int val, char *buf);
int get_guid(__u64 *guid, const char *arg);
#endif /* __UTILS_H__ */

20
ip/iplink.c
View File

@ -420,6 +420,26 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
invarg("Invalid \"state\" value\n", *argv);
ivl.vf = vf;
addattr_l(&req->n, sizeof(*req), IFLA_VF_LINK_STATE, &ivl, sizeof(ivl));
} else if (matches(*argv, "node_guid") == 0) {
struct ifla_vf_guid ivg;
NEXT_ARG();
ivg.vf = vf;
if (get_guid(&ivg.guid, *argv)) {
invarg("Invalid GUID format\n", *argv);
return -1;
}
addattr_l(&req->n, sizeof(*req), IFLA_VF_IB_NODE_GUID, &ivg, sizeof(ivg));
} else if (matches(*argv, "port_guid") == 0) {
struct ifla_vf_guid ivg;
NEXT_ARG();
ivg.vf = vf;
if (get_guid(&ivg.guid, *argv)) {
invarg("Invalid GUID format\n", *argv);
return -1;
}
addattr_l(&req->n, sizeof(*req), IFLA_VF_IB_PORT_GUID, &ivg, sizeof(ivg));
} else {
/* rewind arg */
PREV_ARG();

35
lib/utils.c
View File

@ -1121,3 +1121,38 @@ char *int_to_str(int val, char *buf)
sprintf(buf, "%d", val);
return buf;
}
int get_guid(__u64 *guid, const char *arg)
{
unsigned long int tmp;
char *endptr;
int i;
#define GUID_STR_LEN 23
/* Verify strict format: format string must be
* xx:xx:xx:xx:xx:xx:xx:xx where xx can be an arbitrary
* hex digit
*/
if (strlen(arg) != GUID_STR_LEN)
return -1;
/* make sure columns are in place */
for (i = 0; i < 7; i++)
if (arg[2 + i * 3] != ':')
return -1;
*guid = 0;
for (i = 0; i < 8; i++) {
tmp = strtoul(arg + i * 3, &endptr, 16);
if (endptr != arg + i * 3 + 2)
return -1;
if (tmp > 255)
return -1;
*guid |= tmp << (56 - 8 * i);
}
return 0;
}

12
man/man8/ip-link.8.in
View File

@ -146,7 +146,11 @@ ip-link \- network device configuration
.br
.RB "[ " state " { " auto " | " enable " | " disable " } ]"
.br
.RB "[ " trust " { " on " | " off " } ] ]"
.RB "[ " trust " { " on " | " off " } ]"
.br
.RB "[ " node_guid " eui64 ]"
.br
.RB "[ " port_guid " eui64 ] ]"
.br
.in -9
.RB "[ " master
@ -1196,6 +1200,12 @@ sent by the VF.
.BI trust " on|off"
- trust the specified VF user. This enables that VF user can set a specific feature
which may impact security and/or performance. (e.g. VF multicast promiscuous mode)
.sp
.BI node_guid " eui64"
- configure node GUID for the VF.
.sp
.BI port_guid " eui64"
- configure port GUID for the VF.
.in -8
.TP