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Diffstat (limited to 'lib/librte_ip_frag/rte_ipv6_reassembly.c')
-rw-r--r--lib/librte_ip_frag/rte_ipv6_reassembly.c28
1 files changed, 20 insertions, 8 deletions
diff --git a/lib/librte_ip_frag/rte_ipv6_reassembly.c b/lib/librte_ip_frag/rte_ipv6_reassembly.c
index db249fe6..855e3f74 100644
--- a/lib/librte_ip_frag/rte_ipv6_reassembly.c
+++ b/lib/librte_ip_frag/rte_ipv6_reassembly.c
@@ -59,8 +59,11 @@ ipv6_frag_reassemble(struct ip_frag_pkt *fp)
/* previous fragment found. */
if (fp->frags[i].ofs + fp->frags[i].len == ofs) {
+ RTE_ASSERT(curr_idx != i);
+
/* adjust start of the last fragment data. */
- rte_pktmbuf_adj(m, (uint16_t)(m->l2_len + m->l3_len));
+ rte_pktmbuf_adj(m,
+ (uint16_t)(m->l2_len + m->l3_len));
rte_pktmbuf_chain(fp->frags[i].mb, m);
/* this mbuf should not be accessed directly */
@@ -135,12 +138,13 @@ ipv6_frag_reassemble(struct ip_frag_pkt *fp)
#define FRAG_OFFSET(x) (rte_cpu_to_be_16(x) >> 3)
struct rte_mbuf *
rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
- struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
- struct ipv6_hdr *ip_hdr, struct ipv6_extension_fragment *frag_hdr)
+ struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
+ struct ipv6_hdr *ip_hdr, struct ipv6_extension_fragment *frag_hdr)
{
struct ip_frag_pkt *fp;
struct ip_frag_key key;
- uint16_t ip_len, ip_ofs;
+ uint16_t ip_ofs;
+ int32_t ip_len;
rte_memcpy(&key.src_dst[0], ip_hdr->src_addr, 16);
rte_memcpy(&key.src_dst[2], ip_hdr->dst_addr, 16);
@@ -151,15 +155,17 @@ rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
ip_ofs = FRAG_OFFSET(frag_hdr->frag_data) * 8;
/*
- * as per RFC2460, payload length contains all extension headers as well.
- * since we don't support anything but frag headers, this is what we remove
- * from the payload len.
+ * as per RFC2460, payload length contains all extension headers
+ * as well.
+ * since we don't support anything but frag headers,
+ * this is what we remove from the payload len.
*/
ip_len = rte_be_to_cpu_16(ip_hdr->payload_len) - sizeof(*frag_hdr);
IP_FRAG_LOG(DEBUG, "%s:%d:\n"
"mbuf: %p, tms: %" PRIu64
- ", key: <" IPv6_KEY_BYTES_FMT ", %#x>, ofs: %u, len: %u, flags: %#x\n"
+ ", key: <" IPv6_KEY_BYTES_FMT ", %#x>, "
+ "ofs: %u, len: %d, flags: %#x\n"
"tbl: %p, max_cycles: %" PRIu64 ", entry_mask: %#x, "
"max_entries: %u, use_entries: %u\n\n",
__func__, __LINE__,
@@ -168,6 +174,12 @@ rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
tbl, tbl->max_cycles, tbl->entry_mask, tbl->max_entries,
tbl->use_entries);
+ /* check that fragment length is greater then zero. */
+ if (ip_len <= 0) {
+ IP_FRAG_MBUF2DR(dr, mb);
+ return NULL;
+ }
+
/* try to find/add entry into the fragment's table. */
fp = ip_frag_find(tbl, dr, &key, tms);
if (fp == NULL) {