From: Dmitry Eremin-Solenikov <dmitry.ereminsoleni...@linaro.org>

This reverts commit fdc44dd4322f624c2a5d8c0be5306f7c45364520.
_odp_packet_cmp_data() function is now used by IPsec implementation.

Signed-off-by: Dmitry Eremin-Solenikov <dmitry.ereminsoleni...@linaro.org>
---
/** Email created from pull request 81 (lumag:ipsec-packet-impl-2)
 ** https://github.com/Linaro/odp/pull/81
 ** Patch: https://github.com/Linaro/odp/pull/81.patch
 ** Base sha: edca8cd1e55898826f79383b689c2c4bd2c28b3a
 ** Merge commit sha: 750318196a0c07a634c4755e4da9131a9f11f6f1
 **/
 .../linux-generic/include/odp_packet_internal.h    |  3 +++
 platform/linux-generic/odp_packet.c                | 26 ++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/platform/linux-generic/include/odp_packet_internal.h 
b/platform/linux-generic/include/odp_packet_internal.h
index 37a51feda..051b2b205 100644
--- a/platform/linux-generic/include/odp_packet_internal.h
+++ b/platform/linux-generic/include/odp_packet_internal.h
@@ -326,6 +326,9 @@ int _odp_cls_parse(odp_packet_hdr_t *pkt_hdr, const uint8_t 
*parseptr);
 int _odp_packet_set_data(odp_packet_t pkt, uint32_t offset,
                         uint8_t c, uint32_t len);
 
+int _odp_packet_cmp_data(odp_packet_t pkt, uint32_t offset,
+                        const void *s, uint32_t len);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/platform/linux-generic/odp_packet.c 
b/platform/linux-generic/odp_packet.c
index 0f6e1b79d..fc3882d3b 100644
--- a/platform/linux-generic/odp_packet.c
+++ b/platform/linux-generic/odp_packet.c
@@ -1639,6 +1639,32 @@ int _odp_packet_set_data(odp_packet_t pkt, uint32_t 
offset,
        return 0;
 }
 
+int _odp_packet_cmp_data(odp_packet_t pkt, uint32_t offset,
+                        const void *s, uint32_t len)
+{
+       const uint8_t *ptr = s;
+       void *mapaddr;
+       uint32_t seglen = 0; /* GCC */
+       uint32_t cmplen;
+       int ret;
+       odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);
+
+       ODP_ASSERT(offset + len <= pkt_hdr->frame_len);
+
+       while (len > 0) {
+               mapaddr = packet_map(pkt_hdr, offset, &seglen, NULL);
+               cmplen = len > seglen ? seglen : len;
+               ret = memcmp(mapaddr, ptr, cmplen);
+               if (ret != 0)
+                       return ret;
+               offset  += cmplen;
+               len     -= cmplen;
+               ptr     += cmplen;
+       }
+
+       return 0;
+}
+
 /*
  *
  * Debugging

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