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Fastforwarding datarmnet tip data-kernel.lnx.1.1 to data-kernel.lnx.1.2

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Change-Id: I49b8eb46c6e2b6816f609b60d30dbc3a28f09e6d
This commit is contained in:
Arnav Sharma
2020-08-25 10:28:22 -07:00
parent 45a8e8f2c1 06bf42ec24
commit e994290ed7
2 changed files with 556 additions and 270 deletions
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731
core/rmnet_descriptor.c
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File diff suppressed because it is too large Load Diff

95
core/rmnet_descriptor.h
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@@ -27,12 +27,16 @@ struct rmnet_frag_descriptor_pool {
u32 pool_size; u32 pool_size;
}; };
struct rmnet_fragment {
struct list_head list;
skb_frag_t frag;
};
struct rmnet_frag_descriptor { struct rmnet_frag_descriptor {
struct list_head list; struct list_head list;
struct list_head sub_frags; struct list_head frags;
skb_frag_t frag;
u8 *hdr_ptr;
struct net_device *dev; struct net_device *dev;
u32 len;
u32 hash; u32 hash;
__be32 tcp_seq; __be32 tcp_seq;
__be16 ip_id; __be16 ip_id;
@@ -57,18 +61,28 @@ struct rmnet_frag_descriptor *
rmnet_get_frag_descriptor(struct rmnet_port *port); rmnet_get_frag_descriptor(struct rmnet_port *port);
void rmnet_recycle_frag_descriptor(struct rmnet_frag_descriptor *frag_desc, void rmnet_recycle_frag_descriptor(struct rmnet_frag_descriptor *frag_desc,
struct rmnet_port *port); struct rmnet_port *port);
void rmnet_descriptor_add_frag(struct rmnet_port *port, struct list_head *list, void *rmnet_frag_pull(struct rmnet_frag_descriptor *frag_desc,
struct page *p, u32 page_offset, u32 len); struct rmnet_port *port, unsigned int size);
void *rmnet_frag_trim(struct rmnet_frag_descriptor *frag_desc,
struct rmnet_port *port, unsigned int size);
void *rmnet_frag_header_ptr(struct rmnet_frag_descriptor *frag_desc, u32 off,
u32 len, void *buf);
int rmnet_frag_descriptor_add_frag(struct rmnet_frag_descriptor *frag_desc,
struct page *p, u32 page_offset, u32 len);
int rmnet_frag_descriptor_add_frags_from(struct rmnet_frag_descriptor *to,
struct rmnet_frag_descriptor *from,
u32 off, u32 len);
int rmnet_frag_ipv6_skip_exthdr(struct rmnet_frag_descriptor *frag_desc, int rmnet_frag_ipv6_skip_exthdr(struct rmnet_frag_descriptor *frag_desc,
int start, u8 *nexthdrp, __be16 *fragp); int start, u8 *nexthdrp, __be16 *fragp);
/* QMAP command packets */ /* QMAP command packets */
void rmnet_frag_command(struct rmnet_map_header *qmap, struct rmnet_port *port); void rmnet_frag_command(struct rmnet_frag_descriptor *frag_desc,
int rmnet_frag_flow_command(struct rmnet_map_header *qmap, struct rmnet_map_header *qmap, struct rmnet_port *port);
int rmnet_frag_flow_command(struct rmnet_frag_descriptor *frag_desc,
struct rmnet_port *port, u16 pkt_len); struct rmnet_port *port, u16 pkt_len);
/* Ingress data handlers */ /* Ingress data handlers */
void rmnet_frag_deaggregate(skb_frag_t *frag, struct rmnet_port *port, void rmnet_frag_deaggregate(struct sk_buff *skb, struct rmnet_port *port,
struct list_head *list); struct list_head *list);
void rmnet_frag_deliver(struct rmnet_frag_descriptor *frag_desc, void rmnet_frag_deliver(struct rmnet_frag_descriptor *frag_desc,
struct rmnet_port *port); struct rmnet_port *port);
@@ -84,68 +98,15 @@ void rmnet_descriptor_deinit(struct rmnet_port *port);
static inline void *rmnet_frag_data_ptr(struct rmnet_frag_descriptor *frag_desc) static inline void *rmnet_frag_data_ptr(struct rmnet_frag_descriptor *frag_desc)
{ {
return skb_frag_address(&frag_desc->frag); struct rmnet_fragment *frag;
}
static inline void *rmnet_frag_pull(struct rmnet_frag_descriptor *frag_desc, frag = list_first_entry_or_null(&frag_desc->frags,
struct rmnet_port *port, struct rmnet_fragment, list);
unsigned int size)
{ if (!frag)
if (size >= skb_frag_size(&frag_desc->frag)) {
pr_info("%s(): Pulling %u bytes from %u byte pkt. Dropping\n",
__func__, size, skb_frag_size(&frag_desc->frag));
rmnet_recycle_frag_descriptor(frag_desc, port);
return NULL; return NULL;
}
frag_desc->frag.bv_offset += size; return skb_frag_address(&frag->frag);
skb_frag_size_sub(&frag_desc->frag, size);
return rmnet_frag_data_ptr(frag_desc);
}
static inline void *rmnet_frag_trim(struct rmnet_frag_descriptor *frag_desc,
struct rmnet_port *port,
unsigned int size)
{
if (!size) {
pr_info("%s(): Trimming %u byte pkt to 0. Dropping\n",
__func__, skb_frag_size(&frag_desc->frag));
rmnet_recycle_frag_descriptor(frag_desc, port);
return NULL;
}
if (size < skb_frag_size(&frag_desc->frag))
skb_frag_size_set(&frag_desc->frag, size);
return rmnet_frag_data_ptr(frag_desc);
}
static inline void rmnet_frag_fill(struct rmnet_frag_descriptor *frag_desc,
struct page *p, u32 page_offset, u32 len)
{
get_page(p);
__skb_frag_set_page(&frag_desc->frag, p);
skb_frag_size_set(&frag_desc->frag, len);
frag_desc->frag.bv_offset = page_offset;
}
static inline u8
rmnet_frag_get_next_hdr_type(struct rmnet_frag_descriptor *frag_desc)
{
unsigned char *data = rmnet_frag_data_ptr(frag_desc);
data += sizeof(struct rmnet_map_header);
return ((struct rmnet_map_v5_coal_header *)data)->header_type;
}
static inline bool
rmnet_frag_get_csum_valid(struct rmnet_frag_descriptor *frag_desc)
{
unsigned char *data = rmnet_frag_data_ptr(frag_desc);
data += sizeof(struct rmnet_map_header);
return ((struct rmnet_map_v5_csum_header *)data)->csum_valid_required;
} }
#endif /* _RMNET_DESCRIPTOR_H_ */ #endif /* _RMNET_DESCRIPTOR_H_ */