Adds a public function to add IP4 route to FIB. The applications should
call this function to add IP4 routes to FIB.
Signed-off-by: Ankur Dwivedi <adwiv...@marvell.com>
---
lib/node/ip4_lookup_fib.c | 36 ++++++++++++++++++++++++++++++++++++
lib/node/rte_node_ip4_api.h | 19 +++++++++++++++++++
2 files changed, 55 insertions(+)
diff --git a/lib/node/ip4_lookup_fib.c b/lib/node/ip4_lookup_fib.c
index 9c71610718..e87864e672 100644
--- a/lib/node/ip4_lookup_fib.c
+++ b/lib/node/ip4_lookup_fib.c
@@ -2,6 +2,9 @@
* Copyright(C) 2025 Marvell.
*/
+#include <arpa/inet.h>
+
+#include <eal_export.h>
#include <rte_errno.h>
#include <rte_ether.h>
#include <rte_fib.h>
@@ -37,6 +40,39 @@ static struct ip4_lookup_fib_node_main ip4_lookup_fib_nm;
#define IP4_LOOKUP_NODE_PRIV1_OFF(ctx) \
(((struct ip4_lookup_fib_node_ctx *)ctx)->mbuf_priv1_off)
+RTE_EXPORT_EXPERIMENTAL_SYMBOL(rte_node_ip4_fib_route_add, 25.07)
+int
+rte_node_ip4_fib_route_add(uint32_t ip, uint8_t depth, uint16_t next_hop,
+ enum rte_node_ip4_lookup_next next_node)
+{
+ char abuf[INET6_ADDRSTRLEN];
+ struct in_addr in;
+ uint8_t socket;
+ uint32_t val;
+ int ret;
+
+ in.s_addr = htonl(ip);
+ inet_ntop(AF_INET, &in, abuf, sizeof(abuf));
+ /* Embedded next node id into 24 bit next hop */
+ val = ((next_node << 16) | next_hop) & ((1ull << 24) - 1);
+ node_dbg("ip4_lookup_fib", "FIB: Adding route %s / %d nh (0x%x)", abuf,
depth, val);
+
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+ if (!ip4_lookup_fib_nm.fib[socket])
+ continue;
+
+ ret = rte_fib_add(ip4_lookup_fib_nm.fib[socket], ip, depth,
val);
+ if (ret < 0) {
+ node_err("ip4_lookup_fib",
+ "Unable to add entry %s / %d nh (%x) to FIB on
sock %d, rc=%d",
+ abuf, depth, val, socket, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
static int
setup_fib(unsigned int socket)
{
diff --git a/lib/node/rte_node_ip4_api.h b/lib/node/rte_node_ip4_api.h
index 950751a525..93047a0634 100644
--- a/lib/node/rte_node_ip4_api.h
+++ b/lib/node/rte_node_ip4_api.h
@@ -117,6 +117,25 @@ int rte_node_ip4_rewrite_add(uint16_t next_hop, uint8_t
*rewrite_data,
__rte_experimental
int rte_node_ip4_reassembly_configure(struct rte_node_ip4_reassembly_cfg *cfg,
uint16_t cnt);
+/**
+ * Add ipv4 route to FIB.
+ *
+ * @param ip
+ * IP address of route to be added.
+ * @param depth
+ * Depth of the rule to be added.
+ * @param next_hop
+ * Next hop id of the rule result to be added.
+ * @param next_node
+ * Next node to redirect traffic to.
+ *
+ * @return
+ * 0 on success, negative otherwise.
+ */
+__rte_experimental
+int rte_node_ip4_fib_route_add(uint32_t ip, uint8_t depth, uint16_t next_hop,
+ enum rte_node_ip4_lookup_next next_node);
+
#ifdef __cplusplus
}
#endif
--
2.25.1
