From: Allain Legacy <allain.legacy@windriver.com>
To: <konstantin.ananyev@intel.com>
Cc: <dev@dpdk.org>, <dahir.osman@windriver.com>
Subject: [dpdk-dev] [PATCH] ip_frag: free mbufs on reassembly table destroy
Date: Tue, 25 Apr 2017 13:04:50 -0400 [thread overview]
Message-ID: <20170425170450.173221-1-allain.legacy@windriver.com> (raw)
From: Dahir Osman <dahir.osman@windriver.com>
The rte_ip_frag_table_destroy procedure simply releases the memory for the
table without freeing the packet buffers that may be referenced in the hash
table for in-flight or incomplete packet reassembly operations. To prevent
leaked mbufs go through the list of fragments and free each one
individually.
Reported-by: Matt Peters <matt.peters@windriver.com>
Signed-off-by: Allain Legacy <allain.legacy@windriver.com>
---
lib/librte_ip_frag/ip_frag_common.h | 20 ++++++++++++++++++++
lib/librte_ip_frag/rte_ip_frag.h | 7 ++-----
lib/librte_ip_frag/rte_ip_frag_common.c | 12 ++++++++++++
lib/librte_ip_frag/rte_ipfrag_version.map | 7 +++++++
4 files changed, 41 insertions(+), 5 deletions(-)
diff --git a/lib/librte_ip_frag/ip_frag_common.h b/lib/librte_ip_frag/ip_frag_common.h
index 835e4f93f..9f5619651 100644
--- a/lib/librte_ip_frag/ip_frag_common.h
+++ b/lib/librte_ip_frag/ip_frag_common.h
@@ -130,6 +130,26 @@ ip_frag_free(struct ip_frag_pkt *fp, struct rte_ip_frag_death_row *dr)
dr->cnt = k;
}
+/* delete fragment's mbufs immediately instead of using death row */
+static inline void
+ip_frag_free_immediate(struct ip_frag_pkt *fp)
+{
+ uint32_t i;
+
+ for (i = 0; i < fp->last_idx; i++) {
+ if (fp->frags[i].mb != NULL) {
+ IP_FRAG_LOG(DEBUG, "%s:%d\n"
+ "mbuf: %p, tms: %" PRIu64", key: <%" PRIx64 ", %#x>\n",
+ __func__, __LINE__, fp->frags[i].mb, fp->start,
+ fp->key.src_dst[0], fp->key.id);
+ rte_pktmbuf_free(fp->frags[i].mb);
+ fp->frags[i].mb = NULL;
+ }
+ }
+
+ fp->last_idx = 0;
+}
+
/* if key is empty, mark key as in use */
static inline void
ip_frag_inuse(struct rte_ip_frag_tbl *tbl, const struct ip_frag_pkt *fp)
diff --git a/lib/librte_ip_frag/rte_ip_frag.h b/lib/librte_ip_frag/rte_ip_frag.h
index 6708906d3..ff16f4c52 100644
--- a/lib/librte_ip_frag/rte_ip_frag.h
+++ b/lib/librte_ip_frag/rte_ip_frag.h
@@ -180,11 +180,8 @@ struct rte_ip_frag_tbl * rte_ip_frag_table_create(uint32_t bucket_num,
* @param tbl
* Fragmentation table to free.
*/
-static inline void
-rte_ip_frag_table_destroy(struct rte_ip_frag_tbl *tbl)
-{
- rte_free(tbl);
-}
+void
+rte_ip_frag_table_destroy(struct rte_ip_frag_tbl *tbl);
/**
* This function implements the fragmentation of IPv6 packets.
diff --git a/lib/librte_ip_frag/rte_ip_frag_common.c b/lib/librte_ip_frag/rte_ip_frag_common.c
index 6176ff4e0..70964101c 100644
--- a/lib/librte_ip_frag/rte_ip_frag_common.c
+++ b/lib/librte_ip_frag/rte_ip_frag_common.c
@@ -109,6 +109,18 @@ rte_ip_frag_table_create(uint32_t bucket_num, uint32_t bucket_entries,
return tbl;
}
+/* delete fragmentation table */
+void
+rte_ip_frag_table_destroy(struct rte_ip_frag_tbl *tbl)
+{
+ uint32_t i;
+
+ for (i = 0; i < tbl->nb_entries; i++)
+ ip_frag_free_immediate(&tbl->pkt[i]);
+
+ rte_free(tbl);
+}
+
/* dump frag table statistics to file */
void
rte_ip_frag_table_statistics_dump(FILE *f, const struct rte_ip_frag_tbl *tbl)
diff --git a/lib/librte_ip_frag/rte_ipfrag_version.map b/lib/librte_ip_frag/rte_ipfrag_version.map
index 354fa0822..29e2cfea5 100644
--- a/lib/librte_ip_frag/rte_ipfrag_version.map
+++ b/lib/librte_ip_frag/rte_ipfrag_version.map
@@ -11,3 +11,10 @@ DPDK_2.0 {
local: *;
};
+
+DPDK_17.05 {
+ global:
+
+ rte_ip_frag_table_destroy;
+
+} DPDK_2.0;
--
2.12.1
next reply other threads:[~2017-04-25 17:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-25 17:04 Allain Legacy [this message]
2017-06-04 16:20 ` Ananyev, Konstantin
2017-06-05 14:49 ` Legacy, Allain
2017-06-05 15:49 ` [dpdk-dev] [PATCH v2] " Allain Legacy
2017-06-05 22:25 ` Ananyev, Konstantin
2017-06-22 15:56 ` Thomas Monjalon
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