iproute2: add support of flag XFRM_STATE_ALIGN4

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>

ip/ipxfrm.c

@@ -854,6 +854,7 @@ void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
 		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
 		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
 		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
+		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4");
 		if (flags)
 			fprintf(fp, "%x", flags);
 	}

ip/xfrm_state.c

@@ -84,7 +84,7 @@ static void usage(void)
  	//fprintf(stderr, "REQID - number(default=0)\n");
 
 	fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
-	fprintf(stderr, "FLAG := [ noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec ]\n");
+	fprintf(stderr, "FLAG := [ noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4 ]\n");
 
         fprintf(stderr, "ENCAP := ENCAP-TYPE SPORT DPORT OADDR\n");
         fprintf(stderr, "ENCAP-TYPE := espinudp | espinudp-nonike\n");
@@ -216,6 +216,8 @@ static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
 				*flags |= XFRM_STATE_ICMP;
 			else if (strcmp(*argv, "af-unspec") == 0)
 				*flags |= XFRM_STATE_AF_UNSPEC;
+			else if (strcmp(*argv, "align4") == 0)
+				*flags |= XFRM_STATE_ALIGN4;
 			else {
 				PREV_ARG(); /* back track */
 				break;