ip_frag: disable ip fragmentation if mbuf refcnt is disabled

rte_ipv4_fragment_packet() and rte_ipv6_fragment packet()
call rte_pktmbuf_attach() to attach the segment of the original
packet to the segment of the new fragmented one. Such function
is not declared if RTE_MBUF_REFCNT is disabled, as it needs to
call rte_mbuf_refcnt_update, not declared either.

Therefore, the ipv4/v6 fragmentation libraries are disabled
in that situation.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>

diff --git a/lib/librte_ip_frag/Makefile b/lib/librte_ip_frag/Makefile
index 2265c93..8c00d39 100644 (file)
--- a/lib/librte_ip_frag/Makefile
+++ b/lib/librte_ip_frag/Makefile
@@ -38,9 +38,13 @@ CFLAGS += -O3
 CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
 
 #source files
+ifeq ($(CONFIG_RTE_MBUF_REFCNT),y)
 SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += rte_ipv4_fragmentation.c
-SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += rte_ipv4_reassembly.c
 SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += rte_ipv6_fragmentation.c
+else
+$(info WARNING: Fragmentation feature is disabled because it needs MBUF_REFCNT.)
+endif
+SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += rte_ipv4_reassembly.c
 SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += rte_ipv6_reassembly.c
 SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += rte_ip_frag_common.c
 SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += ip_frag_internal.c

diff --git a/lib/librte_ip_frag/rte_ip_frag.h b/lib/librte_ip_frag/rte_ip_frag.h
index e0936dc..230a903 100644 (file)
--- a/lib/librte_ip_frag/rte_ip_frag.h
+++ b/lib/librte_ip_frag/rte_ip_frag.h
@@ -175,6 +175,7 @@ rte_ip_frag_table_destroy( struct rte_ip_frag_tbl *tbl)
        rte_free(tbl);
 }
 
+#ifdef RTE_MBUF_REFCNT
 /**
  * This function implements the fragmentation of IPv6 packets.
  *
@@ -203,7 +204,7 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in,
                uint16_t mtu_size,
                struct rte_mempool *pool_direct,
                struct rte_mempool *pool_indirect);
-
+#endif
 
 /*
  * This function implements reassembly of fragmented IPv6 packets.
@@ -252,6 +253,7 @@ rte_ipv6_frag_get_ipv6_fragment_header(struct ipv6_hdr *hdr)
                return NULL;
 }
 
+#ifdef RTE_MBUF_REFCNT
 /**
  * IPv4 fragmentation.
  *
@@ -280,6 +282,7 @@ int32_t rte_ipv4_fragment_packet(struct rte_mbuf *pkt_in,
                        uint16_t nb_pkts_out, uint16_t mtu_size,
                        struct rte_mempool *pool_direct,
                        struct rte_mempool *pool_indirect);
+#endif
 
 /*
  * This function implements reassembly of fragmented IPv4 packets.