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iplink: add definitions for GSO_MAX

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Until kernel exports these, add GSO_MAX values into iplink
rather than assuming they are UINT_MAX + 1

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2017-12-14 18:22:56 -08:00
parent 051274b4db
commit 08f9d166c3
1 changed files with 15 additions and 4 deletions
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19
ip/iplink.c
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@ -39,6 +39,14 @@
#define LIBDIR "/usr/lib" #define LIBDIR "/usr/lib"
#endif #endif
#ifndef GSO_MAX_SIZE
#define GSO_MAX_SIZE 65536
#endif
#ifndef GSO_MAX_SEGS
#define GSO_MAX_SEGS 65535
#endif
static void usage(void) __attribute__((noreturn)); static void usage(void) __attribute__((noreturn));
static int iplink_have_newlink(void); static int iplink_have_newlink(void);
@ -854,18 +862,21 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req,
NEXT_ARG(); NEXT_ARG();
if (get_unsigned(&max_size, *argv, 0) || if (get_unsigned(&max_size, *argv, 0) ||
max_size > UINT16_MAX + 1) max_size > GSO_MAX_SIZE)
invarg("Invalid \"gso_max_size\" value\n", invarg("Invalid \"gso_max_size\" value\n",
*argv); *argv);
addattr32(&req->n, sizeof(*req), IFLA_GSO_MAX_SIZE, max_size); addattr32(&req->n, sizeof(*req),
IFLA_GSO_MAX_SIZE, max_size);
} else if (strcmp(*argv, "gso_max_segs") == 0) { } else if (strcmp(*argv, "gso_max_segs") == 0) {
unsigned int max_segs; unsigned int max_segs;
NEXT_ARG(); NEXT_ARG();
if (get_unsigned(&max_segs, *argv, 0) || max_segs > UINT16_MAX) if (get_unsigned(&max_segs, *argv, 0) ||
max_segs > GSO_MAX_SEGS)
invarg("Invalid \"gso_max_segs\" value\n", invarg("Invalid \"gso_max_segs\" value\n",
*argv); *argv);
addattr32(&req->n, sizeof(*req), IFLA_GSO_MAX_SEGS, max_segs); addattr32(&req->n, sizeof(*req),
IFLA_GSO_MAX_SEGS, max_segs);
} else { } else {
if (matches(*argv, "help") == 0) if (matches(*argv, "help") == 0)
usage(); usage();