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ip xfrm: Add xfrm state crypto offload

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syntax:
ip xfrm state .... offload dev <if-name> dir <in or out>

Example to add inbound offload:
  ip xfrm state .... offload dev mlx0 dir in
Example to add outbound offload:
  ip xfrm state .... offload dev mlx0 dir out

Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
This commit is contained in:
Boris Pismenny 2017-04-30 17:16:02 +03:00 committed by Stephen Hemminger
parent a872b870a5
commit cfd2e727f0
2 changed files with 68 additions and 0 deletions
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19
ip/ipxfrm.c
View File

@ -862,6 +862,25 @@ void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
}
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_OFFLOAD_DEV]) {
struct xfrm_user_offload *xuo;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "crypto offload parameters: ");
if (RTA_PAYLOAD(tb[XFRMA_OFFLOAD_DEV]) < sizeof(*xuo)) {
fprintf(fp, "(ERROR truncated)");
fprintf(fp, "%s", _SL_);
return;
}
xuo = (struct xfrm_user_offload *)
RTA_DATA(tb[XFRMA_OFFLOAD_DEV]);
fprintf(fp, "dev %s dir %s", ll_index_to_name(xuo->ifindex),
(xuo->flags & XFRM_OFFLOAD_INBOUND) ? "in" : "out");
fprintf(fp, "%s", _SL_);
}
}
static int xfrm_selector_iszero(struct xfrm_selector *s)

49
ip/xfrm_state.c
View File

@ -60,6 +60,7 @@ static void usage(void)
fprintf(stderr, " [ replay-seq-hi SEQ ] [ replay-oseq-hi SEQ ]\n");
fprintf(stderr, " [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ]\n");
fprintf(stderr, " [ coa ADDR[/PLEN] ] [ ctx CTX ] [ extra-flag EXTRA-FLAG-LIST ]\n");
fprintf(stderr, " [ offload [dev DEV] dir DIR ]\n");
fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ]\n");
fprintf(stderr, " [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]\n");
fprintf(stderr, "Usage: ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]\n");
@ -108,6 +109,7 @@ static void usage(void)
fprintf(stderr, "LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |\n");
fprintf(stderr, " { byte-soft | byte-hard } SIZE | { packet-soft | packet-hard } COUNT\n");
fprintf(stderr, "ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR\n");
fprintf(stderr, "DIR := in | out\n");
exit(-1);
}
@ -264,6 +266,24 @@ static int xfrm_state_extra_flag_parse(__u32 *extra_flags, int *argcp, char ***a
return 0;
}
static int xfrm_offload_dir_parse(__u8 *dir, int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
if (strcmp(*argv, "in") == 0)
*dir = XFRM_OFFLOAD_INBOUND;
else if (strcmp(*argv, "out") == 0)
*dir = 0;
else
invarg("DIR value is invalid", *argv);
*argcp = argc;
*argvp = argv;
return 0;
}
static int xfrm_state_modify(int cmd, unsigned int flags, int argc, char **argv)
{
struct rtnl_handle rth;
@ -283,6 +303,10 @@ static int xfrm_state_modify(int cmd, unsigned int flags, int argc, char **argv)
};
struct xfrm_replay_state replay = {};
struct xfrm_replay_state_esn replay_esn = {};
struct xfrm_user_offload xuo = {};
unsigned int ifindex = 0;
__u8 dir = 0;
bool is_offload = false;
__u32 replay_window = 0;
__u32 seq = 0, oseq = 0, seq_hi = 0, oseq_hi = 0;
char *idp = NULL;
@ -394,6 +418,25 @@ static int xfrm_state_modify(int cmd, unsigned int flags, int argc, char **argv)
xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX,
(void *)&ctx, ctx.sctx.len);
} else if (strcmp(*argv, "offload") == 0) {
is_offload = true;
NEXT_ARG();
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
ifindex = ll_name_to_index(*argv);
if (!ifindex) {
invarg("value after \"offload dev\" is invalid", *argv);
is_offload = false;
}
NEXT_ARG();
}
if (strcmp(*argv, "dir") == 0) {
NEXT_ARG();
xfrm_offload_dir_parse(&dir, &argc, &argv);
} else {
invarg("value after \"offload dir\" is invalid", *argv);
is_offload = false;
}
} else {
/* try to assume ALGO */
int type = xfrm_algotype_getbyname(*argv);
@ -531,6 +574,12 @@ static int xfrm_state_modify(int cmd, unsigned int flags, int argc, char **argv)
exit(-1);
}
if (is_offload) {
xuo.ifindex = ifindex;
xuo.flags = dir;
addattr_l(&req.n, sizeof(req.buf), XFRMA_OFFLOAD_DEV, &xuo,
sizeof(xuo));
}
if (req.xsinfo.flags & XFRM_STATE_ESN ||
replay_window > (sizeof(replay.bitmap) * 8)) {
replay_esn.seq = seq;