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Message-ID: <20241204055659.1700459-3-bbhushan2@marvell.com>
Date: Wed, 4 Dec 2024 11:26:53 +0530
From: Bharat Bhushan <bbhushan2@...vell.com>
To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<sgoutham@...vell.com>, <gakula@...vell.com>, <sbhatta@...vell.com>,
<hkelam@...vell.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
<kuba@...nel.org>, <pabeni@...hat.com>, <jerinj@...vell.com>,
<lcherian@...vell.com>, <ndabilpuram@...vell.com>,
<andrew+netdev@...n.ch>, <richardcochran@...il.com>,
<bbhushan2@...vell.com>
Subject: [net-next PATCH v10 2/8] octeontx2-pf: Move skb fragment map/unmap to common code
Move skb fragment map/unmap function to common file
so as to reuse same for outbound IPsec crypto offload
Signed-off-by: Bharat Bhushan <bbhushan2@...vell.com>
---
.../marvell/octeontx2/nic/otx2_common.c | 46 +++++++++++++++++++
.../marvell/octeontx2/nic/otx2_common.h | 4 ++
.../marvell/octeontx2/nic/otx2_txrx.c | 46 -------------------
3 files changed, 50 insertions(+), 46 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index 523ecb798a7a..971115a5d2cc 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -10,6 +10,7 @@
#include <net/page_pool/helpers.h>
#include <net/tso.h>
#include <linux/bitfield.h>
+#include <net/xfrm.h>
#include "otx2_reg.h"
#include "otx2_common.h"
@@ -1947,3 +1948,48 @@ EXPORT_SYMBOL(otx2_mbox_up_handler_ ## _fn_name);
MBOX_UP_CGX_MESSAGES
MBOX_UP_MCS_MESSAGES
#undef M
+
+dma_addr_t otx2_dma_map_skb_frag(struct otx2_nic *pfvf,
+ struct sk_buff *skb, int seg, int *len)
+{
+ enum dma_data_direction dir = DMA_TO_DEVICE;
+ const skb_frag_t *frag;
+ struct page *page;
+ int offset;
+
+ /* Crypto hardware need write permission for ipsec crypto offload */
+ if (unlikely(xfrm_offload(skb))) {
+ dir = DMA_BIDIRECTIONAL;
+ skb = skb_unshare(skb, GFP_ATOMIC);
+ }
+
+ /* First segment is always skb->data */
+ if (!seg) {
+ page = virt_to_page(skb->data);
+ offset = offset_in_page(skb->data);
+ *len = skb_headlen(skb);
+ } else {
+ frag = &skb_shinfo(skb)->frags[seg - 1];
+ page = skb_frag_page(frag);
+ offset = skb_frag_off(frag);
+ *len = skb_frag_size(frag);
+ }
+ return otx2_dma_map_page(pfvf, page, offset, *len, dir);
+}
+
+void otx2_dma_unmap_skb_frags(struct otx2_nic *pfvf, struct sg_list *sg)
+{
+ enum dma_data_direction dir = DMA_TO_DEVICE;
+ struct sk_buff *skb = NULL;
+ int seg;
+
+ skb = (struct sk_buff *)sg->skb;
+ if (unlikely(xfrm_offload(skb)))
+ dir = DMA_BIDIRECTIONAL;
+
+ for (seg = 0; seg < sg->num_segs; seg++) {
+ otx2_dma_unmap_page(pfvf, sg->dma_addr[seg],
+ sg->size[seg], dir);
+ }
+ sg->num_segs = 0;
+}
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index 566848663fea..bb78d825046d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -1149,4 +1149,8 @@ static inline int mcam_entry_cmp(const void *a, const void *b)
{
return *(u16 *)a - *(u16 *)b;
}
+
+dma_addr_t otx2_dma_map_skb_frag(struct otx2_nic *pfvf,
+ struct sk_buff *skb, int seg, int *len);
+void otx2_dma_unmap_skb_frags(struct otx2_nic *pfvf, struct sg_list *sg);
#endif /* OTX2_COMMON_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
index 3b0457e52a6a..a49041e55c33 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
@@ -11,7 +11,6 @@
#include <linux/bpf.h>
#include <linux/bpf_trace.h>
#include <net/ip6_checksum.h>
-#include <net/xfrm.h>
#include "otx2_reg.h"
#include "otx2_common.h"
@@ -81,51 +80,6 @@ static unsigned int frag_num(unsigned int i)
#endif
}
-static dma_addr_t otx2_dma_map_skb_frag(struct otx2_nic *pfvf,
- struct sk_buff *skb, int seg, int *len)
-{
- enum dma_data_direction dir = DMA_TO_DEVICE;
- const skb_frag_t *frag;
- struct page *page;
- int offset;
-
- /* Crypto hardware need write permission for ipsec crypto offload */
- if (unlikely(xfrm_offload(skb))) {
- dir = DMA_BIDIRECTIONAL;
- skb = skb_unshare(skb, GFP_ATOMIC);
- }
-
- /* First segment is always skb->data */
- if (!seg) {
- page = virt_to_page(skb->data);
- offset = offset_in_page(skb->data);
- *len = skb_headlen(skb);
- } else {
- frag = &skb_shinfo(skb)->frags[seg - 1];
- page = skb_frag_page(frag);
- offset = skb_frag_off(frag);
- *len = skb_frag_size(frag);
- }
- return otx2_dma_map_page(pfvf, page, offset, *len, dir);
-}
-
-static void otx2_dma_unmap_skb_frags(struct otx2_nic *pfvf, struct sg_list *sg)
-{
- enum dma_data_direction dir = DMA_TO_DEVICE;
- struct sk_buff *skb = NULL;
- int seg;
-
- skb = (struct sk_buff *)sg->skb;
- if (unlikely(xfrm_offload(skb)))
- dir = DMA_BIDIRECTIONAL;
-
- for (seg = 0; seg < sg->num_segs; seg++) {
- otx2_dma_unmap_page(pfvf, sg->dma_addr[seg],
- sg->size[seg], dir);
- }
- sg->num_segs = 0;
-}
-
static void otx2_xdp_snd_pkt_handler(struct otx2_nic *pfvf,
struct otx2_snd_queue *sq,
struct nix_cqe_tx_s *cqe)
--
2.34.1
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