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Drivers: hv: vmbus: Refactor the ring-buffer iterator functions

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With no users of hv_pkt_iter_next_raw() and no "external" users of
hv_pkt_iter_first_raw(), the iterator functions can be refactored
and simplified to remove some indirection/code.

Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220428145107.7878-6-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Andrea Parri (Microsoft)
2022-04-28 16:51:07 +02:00
committed by Wei Liu
parent da795eb239
commit 1c9de08f7f
2 changed files with 14 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
include/linux/hyperv.h
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@@ -1706,55 +1706,28 @@ static inline u32 hv_pkt_len(const struct vmpacket_descriptor *desc)
return desc->len8 << 3;
}
struct vmpacket_descriptor *
hv_pkt_iter_first_raw(struct vmbus_channel *channel);
struct vmpacket_descriptor *
hv_pkt_iter_first(struct vmbus_channel *channel);
struct vmpacket_descriptor *
__hv_pkt_iter_next(struct vmbus_channel *channel,
const struct vmpacket_descriptor *pkt,
bool copy);
const struct vmpacket_descriptor *pkt);
void hv_pkt_iter_close(struct vmbus_channel *channel);
static inline struct vmpacket_descriptor *
hv_pkt_iter_next_pkt(struct vmbus_channel *channel,
const struct vmpacket_descriptor *pkt,
bool copy)
hv_pkt_iter_next(struct vmbus_channel *channel,
const struct vmpacket_descriptor *pkt)
{
struct vmpacket_descriptor *nxt;
nxt = __hv_pkt_iter_next(channel, pkt, copy);
nxt = __hv_pkt_iter_next(channel, pkt);
if (!nxt)
hv_pkt_iter_close(channel);
return nxt;
}
/*
* Get next packet descriptor without copying it out of the ring buffer
* If at end of list, return NULL and update host.
*/
static inline struct vmpacket_descriptor *
hv_pkt_iter_next_raw(struct vmbus_channel *channel,
const struct vmpacket_descriptor *pkt)
{
return hv_pkt_iter_next_pkt(channel, pkt, false);
}
/*
* Get next packet descriptor from iterator
* If at end of list, return NULL and update host.
*/
static inline struct vmpacket_descriptor *
hv_pkt_iter_next(struct vmbus_channel *channel,
const struct vmpacket_descriptor *pkt)
{
return hv_pkt_iter_next_pkt(channel, pkt, true);
}
#define foreach_vmbus_pkt(pkt, channel) \
for (pkt = hv_pkt_iter_first(channel); pkt; \
pkt = hv_pkt_iter_next(channel, pkt))