linux-generic: packet: add functions to optimize memset and memcmp paths

Add function implementing memset and memcmp on packet object.

Signed-off-by: Dmitry Eremin-Solenikov <dmitry.ereminsolenikov@linaro.org>
Reviewed-by: <Bill Fischofer bill.fischofer@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>

2 files changed, 54 insertions, 0 deletions

diff --git a/platform/linux-generic/include/odp_packet_internal.h b/platform/linux-generic/include/odp_packet_internal.h
index 0a9f17799..4c8d7515c 100644
--- a/platform/linux-generic/include/odp_packet_internal.h
+++ b/platform/linux-generic/include/odp_packet_internal.h
@@ -268,6 +268,12 @@ int packet_parse_common(packet_parser_t *pkt_hdr, const uint8_t *ptr,
 
 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 c6962ce97..69098624d 100644
--- a/platform/linux-generic/odp_packet.c
+++ b/platform/linux-generic/odp_packet.c
@@ -1665,6 +1665,54 @@ int odp_packet_move_data(odp_packet_t pkt, uint32_t dst_offset,
 					pkt, src_offset, len);
 }
 
+int _odp_packet_set_data(odp_packet_t pkt, uint32_t offset,
+			 uint8_t c, uint32_t len)
+{
+	void *mapaddr;
+	uint32_t seglen = 0; /* GCC */
+	uint32_t setlen;
+	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);
+
+	if (offset + len > pkt_hdr->frame_len)
+		return -1;
+
+	while (len > 0) {
+		mapaddr = packet_map(pkt_hdr, offset, &seglen, NULL);
+		setlen = len > seglen ? seglen : len;
+		memset(mapaddr, c, setlen);
+		offset  += setlen;
+		len     -= setlen;
+	}
+
+	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