1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
13  * rxe_crc32() - Compute cumulative crc32 for a contiguous segment
27  * rxe_icrc_hdr() - Compute the partial ICRC for the network and transport
44 		(skb->protocol == htons(ETH_P_IP) ?  in rxe_icrc_hdr()
58 	if (skb->protocol == htons(ETH_P_IP)) { /* IPv4 */  in rxe_icrc_hdr()
63 		ip4h->ttl = 0xff;  in rxe_icrc_hdr()
64 		ip4h->check = CSUM_MANGLED_0;  in rxe_icrc_hdr()
65 		ip4h->tos = 0xff;  in rxe_icrc_hdr()
71 		memset(ip6h->flow_lbl, 0xff, sizeof(ip6h->flow_lbl));  in rxe_icrc_hdr()
72 		ip6h->priority = 0xf;  in rxe_icrc_hdr()
73 		ip6h->hop_limit = 0xff;  in rxe_icrc_hdr()
75 	udph->check = CSUM_MANGLED_0;  in rxe_icrc_hdr()
79 	memcpy(&pshdr[bth_offset], pkt->hdr, RXE_BTH_BYTES);  in rxe_icrc_hdr()
83 	bth->qpn |= cpu_to_be32(~BTH_QPN_MASK);  in rxe_icrc_hdr()
86 	crc = rxe_crc32(pkt->rxe, crc, pshdr, length);  in rxe_icrc_hdr()
88 	/* And finish to compute the CRC on the remainder of the headers. */  in rxe_icrc_hdr()
89 	crc = rxe_crc32(pkt->rxe, crc, pkt->hdr + RXE_BTH_BYTES,  in rxe_icrc_hdr()
90 			rxe_opcode[pkt->opcode].length - RXE_BTH_BYTES);  in rxe_icrc_hdr()
95  * rxe_icrc_check() - Compute ICRC for a packet and compare to the ICRC
108 	icrcp = (__be32 *)(pkt->hdr + pkt->paylen - RXE_ICRC_SIZE);  in rxe_icrc_check()
112 	icrc = rxe_crc32(pkt->rxe, icrc, (u8 *)payload_addr(pkt),  in rxe_icrc_check()
117 		return -EINVAL;  in rxe_icrc_check()
123  * rxe_icrc_generate() - compute ICRC for a packet.
132 	icrcp = (__be32 *)(pkt->hdr + pkt->paylen - RXE_ICRC_SIZE);  in rxe_icrc_generate()
134 	icrc = rxe_crc32(pkt->rxe, icrc, (u8 *)payload_addr(pkt),  in rxe_icrc_generate()