Add new option parse-ptype in this sample in case of pmd driver
not provide packet type info. If this option enabled, packet type
will be analyzed in Rx callback function.
Signed-off-by: Jianfeng Tan <jianfeng....@intel.com>
Signed-off-by: Yong Liu <yong....@intel.com>
diff --git a/examples/ip_fragmentation/main.c b/examples/ip_fragmentation/main.c
index e1e32c6..df0e73c 100644
--- a/examples/ip_fragmentation/main.c
+++ b/examples/ip_fragmentation/main.c
@@ -143,6 +143,10 @@
static int rx_queue_per_lcore = 1;
+#define CMD_LINE_OPT_PARSE_PTYPE "parse-ptype"
+/* Parse packet type using rx callback and disabled by default */
+static int parse_ptype;
+
#define MBUF_TABLE_SIZE (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
struct mbuf_table {
@@ -488,7 +492,9 @@ struct rte_lpm6_config lpm6_config = {
{
printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
- " -q NQ: number of queue (=ports) per lcore (default is 1)\n",
+ " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
+ " --"CMD_LINE_OPT_PARSE_PTYPE": Set to use software to "
+ "analyze packet type\n",
prgname);
}
@@ -536,6 +542,7 @@ struct rte_lpm6_config lpm6_config = {
int option_index;
char *prgname = argv[0];
static struct option lgopts[] = {
+ {CMD_LINE_OPT_PARSE_PTYPE, 0, 0, 0},
{NULL, 0, 0, 0}
};
@@ -567,8 +574,13 @@ struct rte_lpm6_config lpm6_config = {
/* long options */
case 0:
- print_usage(prgname);
- return -1;
+ if (!strncmp(lgopts[option_index].name,
+ CMD_LINE_OPT_PARSE_PTYPE,
+ sizeof(CMD_LINE_OPT_PARSE_PTYPE))) {
+ printf("soft parse-ptype is enabled\n");
+ parse_ptype = 1;
+ }
+ break;
default:
print_usage(prgname);
@@ -598,6 +610,74 @@ struct rte_lpm6_config lpm6_config = {
printf("%s%s", name, buf);
}
+static inline void
+parse_ptype_one(struct rte_mbuf *m)
+{
+ struct ether_hdr *eth_hdr;
+ uint32_t packet_type = RTE_PTYPE_UNKNOWN;
+ uint16_t ether_type;
+
+ eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+ ether_type = eth_hdr->ether_type;
+ if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
+ packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
+ else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
+ packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
+
+ m->packet_type = packet_type;
+}
+
+static uint16_t
+cb_parse_ptype(uint8_t port __rte_unused, uint16_t queue __rte_unused,
+ struct rte_mbuf *pkts[], uint16_t nb_pkts,
+ uint16_t max_pkts __rte_unused,
+ void *user_param __rte_unused)
+{
+ unsigned int i;
+
+ for (i = 0; i < nb_pkts; ++i)
+ parse_ptype_one(pkts[i]);
+
+ return nb_pkts;
+}
+
+static int
+add_cb_parse_ptype(uint8_t portid, uint16_t queueid)
+{
+ printf("Port %d: softly parse packet type info\n", portid);
+ if (rte_eth_add_rx_callback(portid, queueid, cb_parse_ptype, NULL))
+ return 0;
+
+ printf("Failed to add rx callback: port=%d\n", portid);
+ return -1;
+}
+
+static int check_ptype(uint8_t portid)
+{
+ int i, ret;
+ int ptype_l3_ipv4 = 0;
+ int ptype_l3_ipv6 = 0;
+ uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
+
+ ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
+ if (ret <= 0)
+ return 0;
+
+ uint32_t ptypes[ret];
+ ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
+ for (i = 0; i < ret; ++i) {
+ if (ptypes[i] & RTE_PTYPE_L3_IPV4)
+ ptype_l3_ipv4 = 1;
+ if (ptypes[i] & RTE_PTYPE_L3_IPV6)
+ ptype_l3_ipv6 = 1;
+ }
+
+ if (ptype_l3_ipv4 && ptype_l3_ipv6)
+ return 1;
+
+ return 0;
+}
+
/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
@@ -901,6 +981,14 @@ struct rte_lpm6_config lpm6_config = {
print_ethaddr(" Address:", &ports_eth_addr[portid]);
printf("\n");
+ if (parse_ptype) {
+ if (add_cb_parse_ptype(portid, 0) < 0)
+ rte_exit(EXIT_FAILURE,
+ "Fail to add ptype cb\n");
+ } else if (!check_ptype(portid))
+ rte_exit(EXIT_FAILURE,
+ "PMD can not provide needed ptypes\n");
+
/* init one TX queue per couple (lcore,port) */
queueid = 0;
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
--
1.9.1
